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href="//www.newsama.com/journals/amp/" aria-label="Advances in Mathematical Physics">数学物理学进展</一种>/<GydF4y2Ba一种class="sc-htpNat bUhGXt link sc-nrwXf kCVAWK breadCrumb" href="//www.newsama.com/journals/amp/contents/year/2011/" aria-label="2011">2011年</一种>/<GydF4y2BaS.P.一种Nclass="sc-eitiEO cWbOKB">文章</S.P.一种N></D.一世v> <div class="threeColumn__ThreeColumnWrapper-sc-1bf4078-0 comSpQ threeColumnWrapper"> <div class="threeColumn__LeftWrapper-sc-1bf4078-1 fkVFlF leftWrapper"> <button type="button" class="sc-likbZx iAOkZc section__button " id="sectionButton"><span class="sc-htoDjs diutvq icon__dots dots__detector icon-colored _3n-7Ho7DlfjMlZbrRr9Q4a icon-themeable" title="" font-size="22"></span>文章部分</GydF4y2Babutton> <div class="sc-bGbJRg NxRXU static_contents__section_links links__hidden "> <div id="leftSectionMenu" class="sc-eLExRp jWsoil sc-jtRlXQ kkipbT left_section_menu"> <p>在本页</P.><S.P.一种Nclass="sc-ePZHVD dxfCqj grey" property="background-color" color="#D8D8D8"><a class="sc-htpNat bUhGXt link sc-bEjcJn JKlRH" href="#abstract" aria-label="">抽象的</一种></S.P.一种N><S.P.an class="sc-ePZHVD dxfCqj grey" property="background-color" color="#D8D8D8"><a class="sc-htpNat bUhGXt link sc-bEjcJn JKlRH" href="#introduction" aria-label="">介绍</一种></S.P.一种N><S.P.an class="sc-ePZHVD dxfCqj grey" property="background-color" color="#D8D8D8"><a class="sc-htpNat bUhGXt link sc-bEjcJn JKlRH" href="#conclusion" aria-label="">结论</一种></S.P.一种N><S.P.an class="sc-ePZHVD dxfCqj grey" property="background-color" color="#D8D8D8"><a class="sc-htpNat bUhGXt link sc-bEjcJn JKlRH" href="#references" aria-label="">参考</一种></S.P.一种N><S.P.an class="sc-ePZHVD dxfCqj grey" property="background-color" color="#D8D8D8"><a class="sc-htpNat bUhGXt link sc-bEjcJn JKlRH" href="#copyright" aria-label="">版权</一种></S.P.一种N></D.一世v> </div> </div> <div class="threeColumn__ContentWrapper-sc-1bf4078-3 bbzREB contentWrapper"> <div class="threeColumn__Content-sc-1bf4078-4 jknsZc content"> <div class="articleContent__ArticleContentsWrapper-sc-2yl9jy-0 eSvjPB article_contents"> <div class="articleContent__ArticleContentsSectionsWrapper-sc-2yl9jy-1 jntdRu article_contents__sections_wrapper"> <div class="articleContent__ArticleWrapper-sc-2yl9jy-2 hAzjHP"> <div class="sc-hzNEM hNeCCc article_header_class"> <p class="sc-gmeYpB ctdkmR article_type">研究文章|<GydF4y2Ba!-- -->开放访问</P.><D.一世v class="sc-kZmsYB doGfnX article_citation"> 体积<GydF4y2Ba!-- --> 2011年<GydF4y2Ba!-- --> <span class="sc-iSDuPN ezntTT">|</S.P.一种N>文章ID.<GydF4y2Ba!-- --> 983678.<GydF4y2Ba!-- --> <span class="sc-iSDuPN ezntTT">|</S.P.一种N><一种class="sc-htpNat bUhGXt link sc-fZwumE dqIsrA" href="https://doi.org/10.1155/2011/983678" aria-label="Doi-link">https://doi.org/10.1155/2011/983678</一种></D.一世v> <div class="sc-kaNhvL kwRfSr article_full_citation"> <div class="sc-iBEsjs ezuwCV isHide"> <p>老řichcoufal.<GydF4y2Ba!-- -->那<GydF4y2Ba!-- --> “<S.P.一种Nclass="adjust-article-svg-size">孤立固体管状导体中皮肤效应的评论</S.P.一种N>“，<GydF4y2Ba!-- --><i>数学物理学进展</一世>那<GydF4y2Ba!-- --> 卷。<GydF4y2Ba!-- -->2011年<GydF4y2Ba!-- -->那<GydF4y2Ba!-- --> 文章ID.<GydF4y2Ba!-- -->983678.<GydF4y2Ba!-- -->那<GydF4y2Ba!-- --> 13.<GydF4y2Ba!-- -->   页面<GydF4y2Ba!-- -->那<GydF4y2Ba!-- --> 2011年<GydF4y2Ba!-- -->。<GydF4y2Ba!-- --> https://doi.org/10.1155/2011/983678</P.></D.一世v> <button class="sc-hSdWYo etauus sc-LKuAh fxGnqr" color="">显示引文</GydF4y2Babutton> </div> <h1 class="sc-iRbamj jZOxOO sc-RcBXQ kZecej article_title adjust-article-svg-size heading-title">孤立固体管状导体中皮肤效应的评论</H1></D.一世v> <div class="sc-gPzReC fMlAsT article_authors"> <hr class="sc-fHxwqH kHliir hr__author"> <span class=""><b>老řichcoufal.</GydF4y2Bab><a class="sc-htpNat bUhGXt link" href="mailto:" aria-label="Mail Option"><span class="sc-htoDjs kNoiZu sc-jrIrqw eeUyzW icon-colored _2zt-1j0LmaF8UjTQAM413G icon-themeable" title="" font-size="16"></span></a><sup>1</S.up></span> <div class="sc-iQtOjA llLcVY isHide"> <p><sup>1</S.up><span>电气工程与通信学院，布尔诺理工大学，Technická10,61600布尔诺，捷克共和国</S.P.一种N></P.></D.一世v> <button class="sc-hSdWYo etauus sc-iybRtq clzRlh" color="">展示更多</GydF4y2Babutton> </div> <div class="articleContent__EditorWrapper-sc-2yl9jy-3 evMkvU"> <div class="articleContent__TextWrapper-sc-2yl9jy-8 fYrLtk"> <b>学术编辑：</GydF4y2Bab>M. Lakshmanan.</D.。一世v> <div class="articleContent__PublicationTimeLineWrapper-sc-2yl9jy-4 fjviok"> <div class="articleContent__PublcationCol-sc-2yl9jy-5 hgKieC notPublished"> <span class="articleContent__PublicationField-sc-2yl9jy-6 cIribm">已收到</S.P.一种N><S.P.一种Nclass="articleContent__PublicationValue-sc-2yl9jy-7 khHUcu">2011年3月03日</S.P.一种N></D.一世v> <div class="articleContent__PublcationCol-sc-2yl9jy-5 hgKieC notPublished"> <span class="articleContent__PublicationField-sc-2yl9jy-6 cIribm">修改</S.P.一种N><S.P.一种Nclass="articleContent__PublicationValue-sc-2yl9jy-7 khHUcu">2011年5月6日</S.P.一种N></D.一世v> <div class="articleContent__PublcationCol-sc-2yl9jy-5 hgKieC notPublished"> <span class="articleContent__PublicationField-sc-2yl9jy-6 cIribm">公认</S.P.一种N><S.P.一种Nclass="articleContent__PublicationValue-sc-2yl9jy-7 khHUcu">2011年6月6日</S.P.一种N></D.一世v> <div class="articleContent__PublcationCol-sc-2yl9jy-5 hgKieC isPublished"> <span class="articleContent__PublicationField-sc-2yl9jy-6 cIribm">发表</S.P.一种N><S.P.一种Nclass="articleContent__PublicationValue-sc-2yl9jy-7 khHUcu">2011年8月17日</S.P.一种N></D.一世v> </div> </div> <article class="sc-jeCdPy jsyicZ article_body "> <div> <div class="xml-content"> <h4 class="header" id="abstract">抽象的</H4.><P.>J.C.C.Maxwell衍生的公式，用于计算随可变电流提供的圆柱形导体中的电流密度和电流。在20世纪50年代K. Simonyi公开了一种用于计算由两个导体，圆柱形和管状的圆柱形导体中的电流密度的方法，不同的电阻率。本文证明了西蒙西的结果是不正确的。主要注意力致力于计算由不同电阻率的管状导体构成的管状导体中的电流密度的方法。</P.><S.P.一种Nclass="end-abs"></span> <h4 id="introduction">1.介绍</H4.><P.>麦克斯韦[<一种HR.E.f="#B1">1</一种>]在提供具有可变电流的孤立长圆柱导体中的电流密度和电流的衍生关系。1954 - 1958年，在匈牙利出版了几年关于电气工程数学和物理基础的大量广泛工作。作者，Simonyi，选择了这项工作的一些部分来制作一本书[<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]，发表在德国（十次，1993年最近），美国和苏联。在 [<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>[提出了一种用于计算圆柱形导体中的电流密度的方法，该电流密度由不同电阻率的两个同轴固体导体 - 圆柱形和管状导体构成。在下文中，提出了一种方法，用于计算由不同电阻率的两个管状导体构成的管状导体中的电流密度，并且对[<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]。</P.><P.>Maxwell的结果是引入皮肤效果概念的起点。随着时变电流提供的导体的横截面中的电流密度实际上是不恒定的并且在朝向导体表面的方向上增加。导体横截面上的电流密度的分布确定导体电感和作用在提供不同电流的实心导体之间的力。无限长的直固体导体中的电流密度是长直固体导体系统的各个导体中的电流密度的近似。</P.><H4.一世D.=“current-density-in-long-solitary-tubular-conductor">2.长孤立管导体中的电流密度</H4.><P.>考虑无限长度的孤立固体管状导体。导体的纵向轴线是轴<S.vg height="7.375" id="M1" style="vertical-align:-0.17555pt;width:7.9250002px;" version="1.1" viewbox="0 0 7.9250002 7.375" width="7.9250002" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.375)"> <g transform="translate(72,-66.1)"> <text transform="matrix(1,0,0,-1,-71.95,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>笛卡尔坐标的系统<S.vg height="10.0125" id="M2" style="vertical-align:-2.29482pt;width:24.275px;" version="1.1" viewbox="0 0 24.275 10.0125" width="24.275" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.0125)"> <g transform="translate(72,-63.99)"> <text transform="matrix(1,0,0,-1,-71.95,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.8766499" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.078138" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。除了<S.vg height="10.0125" id="M3" style="vertical-align:-2.29482pt;width:24.275px;" version="1.1" viewbox="0 0 24.275 10.0125" width="24.275" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.0125)"> <g transform="translate(72,-63.99)"> <text transform="matrix(1,0,0,-1,-71.95,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.8766499" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.078138" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>坐标圆柱坐标系统<S.vg height="13.425" id="M4" style="vertical-align:-2.29482pt;width:24.375px;" version="1.1" viewbox="0 0 24.375 13.425" width="24.375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.425)"> <g transform="translate(72,-61.26)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.1012239" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.165659" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>也被考虑。导体横截面<S.vg height="9.875" id="M5" style="vertical-align:-2.29482pt;width:16.475px;" version="1.1" viewbox="0 0 16.475 9.875" width="16.475" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,9.875)"> <g transform="translate(72,-64.1)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.8766499" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>飞机由不平等决定<S.vg height="13.675" id="M6" style="vertical-align:-3.2316pt;width:67.6875px;" version="1.1" viewbox="0 0 67.6875 13.675" width="67.6875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.675)"> <g transform="translate(72,-61.06)"> <text transform="matrix(1,0,0,-1,-71.95,64.34)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,61.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-60.16,64.34)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.604944" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="32.645332" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-22.4,61.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>那<S.vg height="14.7125" id="M7" style="vertical-align:-3.2316pt;width:37.724998px;" version="1.1" viewbox="0 0 37.724998 14.7125" width="37.724998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-60.16,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ≥</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>（见图<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig1/" target="_blank">1</一种>）。</P.><D.一世v class="floats-partial-section partial-carousel-wrapper" data-section="fig1"> <div class="floats-partial-content fig-content-fig1"> <div class="partial-carousel--single-image"> <img alt="" name="983678.fig.001" src="https://static-01.hindawi.com/articles/amp/volume-2011/983678/figures/983678.fig.001.jpg"> <br> <strong></strong> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图1</S.P.一种N><一种一种R.一世一种-label="full view" class="caption-partial-url" href="//www.newsama.com/journals/amp/2011/983678/fig1/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> 管状导体的四分之一的横截面。</GydF4y2Batable> </div> </div> </div> <p>导体连接到理想的电流源[<一种HR.E.f="#B3">5.</一种>那<一种HR.E.f="#B4">6.</一种>]其当前仅取决于<S.vg height="13.45" id="M8" style="vertical-align:-2.21957pt;width:63.612499px;" version="1.1" viewbox="0 0 63.612499 13.45" width="63.612499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.37677" y="0"> ∈</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.417158" y="0"> [</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="23.580658" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.832157" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.04591" y="0"> ∞</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="46.623688" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>并且是正弦的，频率<S.vg height="13.4875" id="M9" style="vertical-align:-2.34499pt;width:10.675px;" version="1.1" viewbox="0 0 10.675 13.4875" width="10.675" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.4875)"> <g transform="translate(72,-61.21)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>那<S.P.一种Nclass="equation" id="eq1"> <svg height="19.975" id="M10" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 19.975" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.975)"> <g transform="translate(72,-56.02)"> <text transform="matrix(1,0,0,-1,138.14,59.82)"> <tspan style="font-size: 12.50px; " x="37.02" y="-2.54"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.2022076" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.365707" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="17.279146" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="24.91848" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="36.959999" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="46.162209" y="0"> S.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="51.025875" y="0"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="54.501709" y="0"> N</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="64.91671" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="73.431252" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="77.344688" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="92.523331" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="104.51371" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="116.5541" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="122.8056" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="130.40742" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="137.34659" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="326.60999" y="-1.0599999"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="330.7735" y="-1.0599999"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="337.02499" y="-1.0599999"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="340.15076" y="-1.0599999"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="346.40225" y="-1.0599999"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>理想的电流源供应电流，但电流不会流过源，以便在检查中没有背导体对管进行检查[<一种HR.E.f="#B5">7.</一种>]。</P.><P.>电流密度矢量<S.vg height="12.1875" id="M11" style="vertical-align:-1.20384pt;width:7.9375px;" version="1.1" viewbox="0 0 7.9375 12.1875" width="7.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.1875)"> <g transform="translate(72,-62.25)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>朝着轴的方向<S.vg height="7.375" id="M12" style="vertical-align:-0.17555pt;width:7.9250002px;" version="1.1" viewbox="0 0 7.9250002 7.375" width="7.9250002" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.375)"> <g transform="translate(72,-66.1)"> <text transform="matrix(1,0,0,-1,-71.95,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>并且只取决于<S.vg height="7.0124998" id="M13" style="vertical-align:-0.0pt;width:6.5px;" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>和时间<S.vg height="9.125" id="M14" style="vertical-align:-0.11285pt;width:5.0124998px;" version="1.1" viewbox="0 0 5.0124998 9.125" width="5.0124998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,9.125)"> <g transform="translate(72,-64.7)"> <text transform="matrix(1,0,0,-1,-71.95,64.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>那<S.vg height="13.45" id="M15" style="vertical-align:-2.21957pt;width:74.824997px;" version="1.1" viewbox="0 0 74.824997 13.45" width="74.824997" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.7148314" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.75522" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.918718" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="32.170219" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="37.383968" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="43.635471" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="48.83672" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="55.588337" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>，和<S.vg height="13.45" id="M16" style="vertical-align:-2.21957pt;width:64.587502px;" version="1.1" viewbox="0 0 64.587502 13.45" width="64.587502" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.214951" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.255341" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.00696" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="33.17046" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="38.271683" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="43.485435" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="47.398872" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>仅在间隔内具有非零值<S.vg height="14.4875" id="M17" style="vertical-align:-3.22281pt;width:43.200001px;" version="1.1" viewbox="0 0 43.200001 14.4875" width="43.200001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.4875)"> <g transform="translate(72,-60.41)"> <text transform="matrix(1,0,0,-1,-71.95,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> [</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-59.77,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 一世</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-56.84,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.53,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> O.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-41.65,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</GydF4y2Batspan> </text> </g> </g> </svg>。流过导体的电流激发由载体确定的磁场<S.vg height="10.6875" id="M18" style="vertical-align:-0.0pt;width:10.55px;" version="1.1" viewbox="0 0 10.55 10.6875" width="10.55" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6875)"> <g transform="translate(72,-63.45)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，谁的幅度<S.vg height="10.325" id="M19" style="vertical-align:-0.0pt;width:11.625px;" version="1.1" viewbox="0 0 11.625 10.325" width="11.625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>也仅取决于<S.vg height="7.0124998" id="M20" style="vertical-align:-0.0pt;width:6.5px;" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>和<S.vg height="9.125" id="M21" style="vertical-align:-0.11285pt;width:5.0124998px;" version="1.1" viewbox="0 0 5.0124998 9.125" width="5.0124998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,9.125)"> <g transform="translate(72,-64.7)"> <text transform="matrix(1,0,0,-1,-71.95,64.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。事实如此<S.vg height="12.8875" id="M22" style="vertical-align:-1.76814pt;width:24.875px;" version="1.1" viewbox="0 0 24.875 12.8875" width="24.875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.8875)"> <g transform="translate(72,-61.69)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.452748" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>不依赖<S.vg height="7.375" id="M23" style="vertical-align:-0.17555pt;width:7.9250002px;" version="1.1" viewbox="0 0 7.9250002 7.375" width="7.9250002" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.375)"> <g transform="translate(72,-66.1)"> <text transform="matrix(1,0,0,-1,-71.95,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>实际上意味着假设电磁场的无限高传播速度。在这种情况下，电流被认为是缓慢变化的[<一种HR.E.f="#B3">5.</一种>]。我们假设导体及其邻居的渗透性是<S.vg height="10.875" id="M24" style="vertical-align:-3.25793pt;width:15.7375px;" version="1.1" viewbox="0 0 15.7375 10.875" width="15.7375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.875)"> <g transform="translate(72,-63.3)"> <text transform="matrix(1,0,0,-1,-71.95,66.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-64.34,63.47)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>。导体电阻率<S.vg height="13.6125" id="M25" style="vertical-align:-2.34499pt;width:47.462502px;" version="1.1" viewbox="0 0 47.462502 13.6125" width="47.462502" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.6125)"> <g transform="translate(72,-61.11)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.7398367" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.780226" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.031727" y="0"> /</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="31.507561" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，在哪里<S.vg height="9.9375" id="M26" style="vertical-align:-2.34499pt;width:8.0625px;" version="1.1" viewbox="0 0 8.0625 9.9375" width="8.0625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,9.9375)"> <g transform="translate(72,-64.05)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>是电导率，位移电流如此之低<S.vg height="10.7375" id="M27" style="vertical-align:-0.13794pt;width:8.1125002px;" version="1.1" viewbox="0 0 8.1125002 10.7375" width="8.1125002" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.7375)"> <g transform="translate(72,-63.41)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg><b>D.</GydF4y2Bab> <svg height="10.9125" id="M28" style="vertical-align:-0.17555pt;width:17.35px;" version="1.1" viewbox="0 0 17.35 10.9125" width="17.35" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.9125)"> <g transform="translate(72,-63.27)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> /</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.8523636" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>可以忽略。在本文的全部，只有平面之间的导体部分<S.vg height="11.0625" id="M29" style="vertical-align:-3.13504pt;width:41.200001px;" version="1.1" viewbox="0 0 41.200001 11.0625" width="41.200001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0625)"> <g transform="translate(72,-63.15)"> <text transform="matrix(1,0,0,-1,-71.95,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.7023277" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.742718" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-43.96,63.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>和<S.vg height="11.0625" id="M30" style="vertical-align:-3.13504pt;width:41.200001px;" version="1.1" viewbox="0 0 41.200001 11.0625" width="41.200001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0625)"> <g transform="translate(72,-63.15)"> <text transform="matrix(1,0,0,-1,-71.95,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.7023277" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.742718" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-43.96,63.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> </g> </g> </svg>，在哪里<S.vg height="12.375" id="M31" style="vertical-align:-3.13504pt;width:52.5px;" version="1.1" viewbox="0 0 52.5 12.375" width="52.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.375)"> <g transform="translate(72,-62.1)"> <text transform="matrix(1,0,0,-1,-71.95,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.71,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-57.36,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-39.09,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> </g> </g> </svg>和<S.vg height="11.0625" id="M32" style="vertical-align:-3.13504pt;width:84.3125px;" version="1.1" viewbox="0 0 84.3125 11.0625" width="84.3125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0625)"> <g transform="translate(72,-63.15)"> <text transform="matrix(1,0,0,-1,-71.95,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.71,63.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.06,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-40.48,63.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-32.13,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-13.85,63.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.3759999" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>，会被考虑。</P.><P.>它已发表多次（最近在[<一种HR.E.f="#B6">8.</一种>]）导体中电流密度的相量<S.P.一种Nclass="equation" id="EEq2"> <svg height="20.625" id="M33" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 20.625" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,20.625)"> <g transform="translate(72,-55.5)"> <text transform="matrix(1,0,0,-1,147.52,59.82)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 147.52,56.78 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,157.86,59.83)"> <tspan style="font-size: 12.50px; " x="29.559999" y="-2.53"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.2647228" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="16.891554" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.93" y="0.0099999998"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="39.269981" y="0.0099999998"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="43.433479" y="0.0099999998"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="48.534702" y="0.0099999998"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="54.773701" y="0.0099999998"> E.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="60.325031" y="0.0099999998"> X</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="66.57653" y="0.0099999998"> P.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="77.004036" y="0.0099999998"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="81.167534" y="0.0099999998"> j</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="84.643372" y="0.0099999998"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="93.770561" y="0.0099999998"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="97.934059" y="0.0099999998"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="103.03528" y="0.0099999998"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="107.19878" y="0.0099999998"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="306.89001" y="-0.79000002"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="311.0535" y="-0.79000002"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="317.30499" y="-0.79000002"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="320.43076" y="-0.79000002"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="326.68225" y="-0.79000002"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>是二阶微分方程的解决方案<S.P.一种Nclass="equation" id="EEq3"> <svg height="38.512501" id="M34" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 38.512501" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,38.5125)"> <g transform="translate(72,-41.19)"> <text transform="matrix(1,0,0,-1,108.81,60.78)"> <tspan style="font-size: 12.50px; " x="0" y="0"> D.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,115.07,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,119.94,60.78)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 119.94,57.74 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <g> <path d="m 108.81,53.61 19.38,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,110.39,41.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> D.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,121.74,44.81)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,132.17,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.53" y="-7.25"> 1</GydF4y2Batspan> </text> <g> <path d="m 144.7,53.61 6.26,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,145.28,41.73)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.0699997" y="-19.049999"> D.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="14.3215" y="-19.049999"> </GydF4y2Batspan> </text> <g> <path d="m 159.6,57.74 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <g> <path d="m 153.35,53.61 14.5,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,154.92,41.73)"> <tspan style="font-size: 12.50px; " x="0" y="0"> D.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="16.91" y="-8.7600002"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.237719" y="-8.7600002"> j</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="31.713552" y="-8.7600002"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,194.07,55.49)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,198.95,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 198.95,47.45 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,210.67,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="40.159637" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,258.27,55.49)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,266.61,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.554932" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,294.78,47.36)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,299.66,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.3390212" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="165.09" y="-2.98"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="169.25349" y="-2.98"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="175.505" y="-2.98"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="178.63075" y="-2.98"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="184.88225" y="-2.98"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>（<一种HR.E.f="#EEq3">2.3</一种>）在间隔中<S.vg height="14.7125" id="M35" style="vertical-align:-3.2316pt;width:93.987503px;" version="1.1" viewbox="0 0 93.987503 14.7125" width="93.987503" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> [</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.69,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-59.47,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2137508" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-49.15,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-44.65,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="17.704248" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-21.84,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-15.14,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ></GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>，取决于两个常数[<一种HR.E.f="#B7">9.</一种>那<一种HR.E.f="#B8">10.</一种>]使用贝塞尔或开尔文函数表示。当然，常量不能从解决方案上施加的一些任意条件确定;按照溶液的存在和唯一性的定理（<一种HR.E.f="#EEq3">2.3</一种>）[<一种HR.E.f="#B7">9.</一种>那<一种HR.E.f="#B8">10.</一种>]，它们必须从条件中确定<S.P.一种Nclass="equation" id="EEq4"> <svg height="30.9625" id="M36" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 30.9625" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,30.9625)"> <g transform="translate(72,-47.23)"> <text transform="matrix(1,0,0,-1,137.44,56.16)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 137.44,53.12 8.26,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,147.78,53.65)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 153.63,64.56 5.1,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,153.63,56.16)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.0999999" y="2.51"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="61.459999" y="-7.25"> D.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="14.43" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="26.457886" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="32.571854" y="0"> 那</GydF4y2Batspan> </text> <g> <path d="m 212.54,59.28 11.35,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,212.54,47.41)"> <tspan style="font-size: 12.50px; " x="16.709999" y="-8.75"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="0" y="0"> D.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 229.25,53.12 8.26,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,239.59,53.65)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 245.44,64.56 5.1,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,245.44,56.16)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.0999999" y="2.51"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="14.43" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="26.457886" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="219.31" y="-0.33000001"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="223.4735" y="-0.33000001"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="229.72501" y="-0.33000001"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="232.85075" y="-0.33000001"> 4.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="239.10225" y="-0.33000001"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>和<S.vg height="12.175" id="M37" style="vertical-align:-0.0pt;width:6.5px;" version="1.1" viewbox="0 0 6.5 12.175" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.175)"> <g transform="translate(72,-62.26)"> <g> <path d="m -71.95,70.71 5.1,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,62.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>那<S.vg height="9.875" id="M38" style="vertical-align:-2.29482pt;width:7.7624998px;" version="1.1" viewbox="0 0 7.7624998 9.875" width="7.7624998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,9.875)"> <g transform="translate(72,-64.1)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，和<S.vg height="10.75" id="M39" style="vertical-align:-0.15048pt;width:9.375px;" version="1.1" viewbox="0 0 9.375 10.75" width="9.375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.75)"> <g transform="translate(72,-63.4)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>作为给定的数字，<S.vg height="16.200001" id="M40" style="vertical-align:-3.2316pt;width:65.224998px;" version="1.1" viewbox="0 0 65.224998 16.200001" width="65.224998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.2)"> <g transform="translate(72,-59.04)"> <g> <path d="m -71.95,70.71 5.1,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,62.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> ∈</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.604944" y="0"> [</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="24.768442" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-42.07,59.18)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-38.85,62.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-28.54,59.18)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-24.04,62.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</GydF4y2Batspan> </text> </g> </g> </svg>。</P.><P.>用于圆柱形导体（<S.vg height="14.7125" id="M41" style="vertical-align:-3.2316pt;width:37.724998px;" version="1.1" viewbox="0 0 37.724998 14.7125" width="37.724998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-60.16,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>），（<一种HR.E.f="#EEq3">2.3</一种>）有一个弱的奇点[<一种HR.E.f="#B9">11.</一种>]在这一点<S.vg height="14.7125" id="M42" style="vertical-align:-3.2316pt;width:37.724998px;" version="1.1" viewbox="0 0 37.724998 14.7125" width="37.724998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-60.16,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>。在这种情况下，确定解决方案的常数之一等于零，并确定第一条件的另一个常数（<一种HR.E.f="#EEq4">2.4</一种>）就足够了，正如完全证明的那样<一种HR.E.f="#B6">8.</一种>]。这一事实，一起忽略了解决方案的存在和唯一性的定理（<一种HR.E.f="#EEq3">2.3</一种>），可能导致了第二条条件的信念（<一种HR.E.f="#EEq4">2.4</一种>）是多余的，相传<S.vg height="15.675" id="M43" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>可以通过解决来确定（<一种HR.E.f="#EEq3">2.3</一种>）如果是管状导体<S.vg height="14.7125" id="M44" style="vertical-align:-3.2316pt;width:37.724998px;" version="1.1" viewbox="0 0 37.724998 14.7125" width="37.724998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-60.16,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ></GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>。这个问题将再次处理部分<一种HR.E.f="#sec3">3.</一种>。</P.><H4.一世D.=“current-density-in-composite-conductor">3.复合导体中的电流密度</H4.><P.>在下文中，术语复合导体被认为是表示由两个同轴管状导体的内部和外部构成的管状导体。复合导体的内管状导体由电阻率确定<S.vg height="14.7125" id="M45" style="vertical-align:-3.2316pt;width:55.512501px;" version="1.1" viewbox="0 0 55.512501 14.7125" width="55.512501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.98,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> /</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.75522" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-30.86,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>并通过半径<S.vg height="11.075" id="M46" style="vertical-align:-3.25793pt;width:40.674999px;" version="1.1" viewbox="0 0 40.674999 11.075" width="40.674999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.075)"> <g transform="translate(72,-63.14)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-59.25,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-48.94,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，和<S.vg height="14.75" id="M47" style="vertical-align:-3.25793pt;width:103.1375px;" version="1.1" viewbox="0 0 103.1375 14.75" width="103.1375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.75)"> <g transform="translate(72,-60.2)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-55.78,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ≥</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="23.493137" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-27.18,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-16.11,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,1.03,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。外导体由电阻率确定<S.vg height="14.7125" id="M48" style="vertical-align:-3.2316pt;width:58.724998px;" version="1.1" viewbox="0 0 58.724998 14.7125" width="58.724998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-57.69,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> /</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.75522" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-29.58,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>和半径<S.vg height="11.075" id="M49" style="vertical-align:-3.25793pt;width:41.5625px;" version="1.1" viewbox="0 0 41.5625 11.075" width="41.5625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.075)"> <g transform="translate(72,-63.14)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-57.97,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-47.66,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，和<S.vg height="13.7" id="M50" style="vertical-align:-3.25793pt;width:115.9875px;" version="1.1" viewbox="0 0 115.9875 13.7" width="115.9875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.7)"> <g transform="translate(72,-61.04)"> <text transform="matrix(1,0,0,-1,-71.95,64.34)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,61.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.94,64.34)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-36.8,61.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-27.92,64.34)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-17.61,61.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-5.25,64.34)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,11.89,61.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>（见图<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig2/" target="_blank">2</一种>）。通常，可以假设所考虑的导体由任意数量的管状导体组成，但是求解两个导体更简单，并且还易于概括到任意数量的导体。</P.><D.一世v class="floats-partial-section partial-carousel-wrapper" data-section="fig2"> <div class="floats-partial-content fig-content-fig2"> <div class="partial-carousel--single-image"> <img alt="" name="983678.fig.002" src="https://static-01.hindawi.com/articles/amp/volume-2011/983678/figures/983678.fig.002.jpg"> <br> <strong></strong> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图2</S.P.一种N><一种一种R.一世一种-label="full view" class="caption-partial-url" href="//www.newsama.com/journals/amp/2011/983678/fig2/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> 复合导体的四分之一的横截面。</GydF4y2Batable> </div> </div> </div> <h5 id="sec3.1">3.1。Simonyi的解决方案</H5.><P.>在 [<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]，SIMONYI概述了一种计算电场强度的量相的方法<S.vg height="15.4875" id="M51" style="vertical-align:-4.1381pt;width:12.225px;" version="1.1" viewbox="0 0 12.225 15.4875" width="12.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>在假设的复合导体中<S.vg height="14.75" id="M52" style="vertical-align:-3.25793pt;width:104.75px;" version="1.1" viewbox="0 0 104.75 14.75" width="104.75" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.75)"> <g transform="translate(72,-60.2)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-55.78,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="23.493137" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-27.18,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-14.27,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,2.87,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>那就是他解决的（<一种HR.E.f="#EEq3">2.3</一种>）为了<S.P.一种Nclass="equation" id="EEq5"> <svg height="16.862499" id="M53" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 16.862499" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.8625)"> <g transform="translate(72,-58.51)"> <text transform="matrix(1,0,0,-1,188.48,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 188.48,60.16 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,200.2,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.391912" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 218.59,60.31 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,464.75,62.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.414999" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.540749" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.79225" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>在内部和外导体上假设条件<S.P.一种Nclass="equation" id="EEq6"> <svg height="101.2375" id="M54" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 101.2375" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,101.2375)"> <g transform="translate(72,8.99)"> <text transform="matrix(1,0,0,-1,165.52,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> L.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.9516678" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,159.38,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0236478" y="0"> →</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="14.589584" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,177.55,53.51)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 6.25px; " x="1.9443721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,184.43,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,190.42,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 190.42,60.31 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,203.57,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.166859" y="0"> L.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.642693" y="0"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.118526" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,215.61,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0236478" y="0"> →</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="14.589584" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,233.77,53.51)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 6.25px; " x="1.9443721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,240.65,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> +</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,246.65,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 246.65,60.31 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,256.33,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="208.42" y="4.8699999"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="212.5835" y="4.8699999"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="218.83499" y="4.8699999"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="221.96075" y="4.8699999"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="228.21225" y="4.8699999"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-89.559998" y="29.950001"> L.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-86.084167" y="29.950001"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-82.60833" y="29.950001"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,160.84,25.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0236478" y="0"> →</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="14.580832" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,179,23.56)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 6.25px; " x="2.863416" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,185.47,25.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,191.46,33.25)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 191.46,30.36 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,204.61,33.25)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="17.96681" y="0"> L.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.442644" y="0"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="24.91848" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,216.65,25.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0236478" y="0"> →</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="14.589584" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,234.82,23.56)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 6.25px; " x="2.863416" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,241.28,25.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> +</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,247.28,33.25)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 247.28,30.36 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,256.96,33.25)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="207.78999" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="211.95351" y="0"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="218.205" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="221.33075" y="0"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="227.58224" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-93.599998" y="29.959999"> L.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-90.124168" y="29.959999"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-86.648331" y="29.959999"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,157.43,-4.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0236478" y="0"> →</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="14.589584" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,175.6,-6.4)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 6.25px; " x="2.863416" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,182.06,-4.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,188.06,3.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 188.06,0.4 12.04,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,203.57,3.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="17.96681" y="0"> L.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.442644" y="0"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="24.91848" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,215.61,-4.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0236478" y="0"> →</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="14.589584" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,233.77,-6.4)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 6.25px; " x="2.863416" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,240.24,-4.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> +</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,246.24,3.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 246.24,0.4 12.04,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,258.28,3.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="206.47" y="4.8600001"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="210.6335" y="4.8600001"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="216.88499" y="4.8600001"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="220.01074" y="4.8600001"> 4.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="226.26225" y="4.8600001"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>得到满足。西蒙西的配方不是绝对一般的，因为在他的概念中，内导体必须是圆柱形的，导体之间没有绝缘体（见图<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig2/" target="_blank">2</一种>）。在 [<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]，正确假设寻求的领域<S.vg height="15.4875" id="M57" style="vertical-align:-4.1381pt;width:12.225px;" version="1.1" viewbox="0 0 12.225 15.4875" width="12.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>取决于复杂常数的内导体<S.vg height="19.612499" id="M58" style="vertical-align:-7.27315pt;width:17.424999px;" version="1.1" viewbox="0 0 17.424999 19.612499" width="17.424999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.6125)"> <g transform="translate(72,-56.31)"> <text transform="matrix(1,0,0,-1,-71.95,63.61)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.99,60.48)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <g> <path d="m -71.95,57.6 13.84,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>在复杂常数上的外导体中<S.vg height="19.612499" id="M59" style="vertical-align:-7.27315pt;width:17.424999px;" version="1.1" viewbox="0 0 17.424999 19.612499" width="17.424999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.6125)"> <g transform="translate(72,-56.31)"> <text transform="matrix(1,0,0,-1,-71.95,63.61)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.99,60.48)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</GydF4y2Batspan> </text> <g> <path d="m -71.95,57.6 13.84,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>和<S.vg height="19.4" id="M60" style="vertical-align:-7.27315pt;width:17.1px;" version="1.1" viewbox="0 0 17.1 19.4" width="17.1" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.4)"> <g transform="translate(72,-56.48)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-63.25,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</GydF4y2Batspan> </text> <g> <path d="m -71.95,57.77 13.58,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>。但是，可以使用条件建立这三个常数的断言（<一种HR.E.f="#EEq6">3.2</一种>），（<一种HR.E.f="#EEq6">3.3</一种>），和（<一种HR.E.f="#EEq6">3.4</一种>）是不正确的。计算的计算<S.vg height="19.612499" id="M61" style="vertical-align:-7.27315pt;width:41.237499px;" version="1.1" viewbox="0 0 41.237499 19.612499" width="41.237499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.6125)"> <g transform="translate(72,-56.31)"> <text transform="matrix(1,0,0,-1,-71.95,63.61)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.99,60.48)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</GydF4y2Batspan> </text> <g> <path d="m -71.95,57.6 13.84,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-58.11,63.61)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-43.94,60.48)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <g> <path d="m -52.9,57.6 13.84,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>，和<S.vg height="19.4" id="M62" style="vertical-align:-7.27315pt;width:17.1px;" version="1.1" viewbox="0 0 17.1 19.4" width="17.1" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.4)"> <g transform="translate(72,-56.48)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-63.25,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</GydF4y2Batspan> </text> <g> <path d="m -71.95,57.77 13.58,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>没有在[<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]。</P.><P.>Simonyi认为他的建筑作为电磁场的决定，即田地的确定<S.vg height="10.6875" id="M63" style="vertical-align:-0.0pt;width:10.55px;" version="1.1" viewbox="0 0 10.55 10.6875" width="10.55" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6875)"> <g transform="translate(72,-63.45)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>和<S.vg height="10.6875" id="M64" style="vertical-align:-0.0pt;width:12.2875px;" version="1.1" viewbox="0 0 12.2875 10.6875" width="12.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6875)"> <g transform="translate(72,-63.45)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>或phasors.<S.vg height="15.4875" id="M65" style="vertical-align:-4.1381pt;width:12.225px;" version="1.1" viewbox="0 0 12.225 15.4875" width="12.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>和<S.vg height="15.4875" id="M66" style="vertical-align:-4.1381pt;width:15.175px;" version="1.1" viewbox="0 0 15.175 15.4875" width="15.175" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 12.04,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>，有领域<S.vg height="12.1875" id="M67" style="vertical-align:-1.20384pt;width:7.9375px;" version="1.1" viewbox="0 0 7.9375 12.1875" width="7.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.1875)"> <g transform="translate(72,-62.25)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>或phasor.<S.vg height="15.675" id="M68" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>由关系决定（<一种HR.E.f="#EEq5">3.1</一种>）。这不必要地使建筑物复杂化，并给人留下这种田地<S.vg height="10.6875" id="M69" style="vertical-align:-0.0pt;width:10.55px;" version="1.1" viewbox="0 0 10.55 10.6875" width="10.55" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6875)"> <g transform="translate(72,-63.45)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>和<S.vg height="10.6875" id="M70" style="vertical-align:-0.0pt;width:12.2875px;" version="1.1" viewbox="0 0 12.2875 10.6875" width="12.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6875)"> <g transform="translate(72,-63.45)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>在某种程度上是独立的。但是，这个领域<S.vg height="10.6875" id="M71" style="vertical-align:-0.0pt;width:10.55px;" version="1.1" viewbox="0 0 10.55 10.6875" width="10.55" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6875)"> <g transform="translate(72,-63.45)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>在导体和领域<S.vg height="10.6875" id="M72" style="vertical-align:-0.0pt;width:12.2875px;" version="1.1" viewbox="0 0 12.2875 10.6875" width="12.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6875)"> <g transform="translate(72,-63.45)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>在整个空间中，由场地独特地确定<S.vg height="12.1875" id="M73" style="vertical-align:-1.20384pt;width:7.9375px;" version="1.1" viewbox="0 0 7.9375 12.1875" width="7.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.1875)"> <g transform="translate(72,-62.25)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>因此，电磁场由（<一种HR.E.f="#EEq3">2.3</一种>）。</P.><P.>形成复合导体的两个导体是固体和均匀的，使得在每个导体中，电流密度将是连续的，但没有理由认为它也是连续的<S.vg height="11.05" id="M74" style="vertical-align:-3.2316pt;width:44.0625px;" version="1.1" viewbox="0 0 44.0625 11.05" width="44.0625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.05)"> <g transform="translate(72,-63.16)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.604944" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.24,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。没有理由假设矢量<S.vg height="10.6875" id="M75" style="vertical-align:-0.0pt;width:10.55px;" version="1.1" viewbox="0 0 10.55 10.6875" width="10.55" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6875)"> <g transform="translate(72,-63.45)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>是连续的<S.vg height="11.05" id="M76" style="vertical-align:-3.2316pt;width:44.0625px;" version="1.1" viewbox="0 0 44.0625 11.05" width="44.0625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.05)"> <g transform="translate(72,-63.16)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.604944" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.24,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>因为关系（<一种HR.E.f="#EEq5">3.1</一种>）持有。它遵循这个条件（<一种HR.E.f="#EEq6">3.2</一种>除了琐碎的情况外，通常不会履行<S.vg height="11.05" id="M77" style="vertical-align:-3.2316pt;width:44.862499px;" version="1.1" viewbox="0 0 44.862499 11.05" width="44.862499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.05)"> <g transform="translate(72,-63.16)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.98,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-40.67,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，这不需要作为复合导体来解决，因为在[<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>它是假设的<S.vg height="11.075" id="M78" style="vertical-align:-3.25793pt;width:55.162498px;" version="1.1" viewbox="0 0 55.162498 11.075" width="55.162498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.075)"> <g transform="translate(72,-63.14)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.94,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-36.8,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>（见示例<一种HR.E.f="#ex2">3.2</一种>）。</P.><P.>根据 [<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]，条件右侧限制的值（<一种HR.E.f="#EEq6">3.3</一种>）等于导体外的规定电场。导体连接的理想电流源以在所考虑的有限导体段上产生无限大的电压。<一种HR.E.f="#B4">6.</一种>因此，导体外部的电场不能合理地规定。</P.><P.>状况（<一种HR.E.f="#EEq6">3.4</一种>）仅表达磁场是连续的事实。在本文中的假设和[<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]，状况（<一种HR.E.f="#EEq6">3.4</一种>）总是满足。它是磁场的属性[<一种HR.E.f="#B10">12.</一种>]和条件（<一种HR.E.f="#EEq6">3.4</一种>因此是多余的。状况（<一种HR.E.f="#EEq6">3.2</一种>） - （<一种HR.E.f="#EEq6">3.4</一种>）缺乏衍生品的设定值<S.vg height="15.85" id="M79" style="vertical-align:-4.1381pt;width:38.912498px;" version="1.1" viewbox="0 0 38.912498 15.85" width="38.912498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.3765302" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -65.56,60.61 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-55.88,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> /</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.8523636" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>在某些时间间隔<S.vg height="14.5375" id="M80" style="vertical-align:-3.25793pt;width:51.974998px;" version="1.1" viewbox="0 0 51.974998 14.5375" width="51.974998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.5375)"> <g transform="translate(72,-60.37)"> <text transform="matrix(1,0,0,-1,-71.95,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> [</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.69,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.8,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-43.49,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-34.64,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</GydF4y2Batspan> </text> </g> </g> </svg>，这是找到解决方案的必要条件（<一种HR.E.f="#EEq3">2.3</一种>）对于电场。它遵循西蒙迪的问题和条件的制定（<一种HR.E.f="#EEq6">3.2</一种>）和（<一种HR.E.f="#EEq6">3.3</一种>）在外导体中，即在间隔内<S.vg height="14.5375" id="M81" style="vertical-align:-3.25793pt;width:51.974998px;" version="1.1" viewbox="0 0 51.974998 14.5375" width="51.974998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.5375)"> <g transform="translate(72,-60.37)"> <text transform="matrix(1,0,0,-1,-71.95,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> [</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.69,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.8,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-43.49,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-34.64,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</GydF4y2Batspan> </text> </g> </g> </svg>，可以确定电场，使得它在该间隔的终点处获取规定值。这是不可能的，因为在初始点处具有相同的规定值的无限多字段<S.vg height="11.075" id="M82" style="vertical-align:-3.25793pt;width:17.6px;" version="1.1" viewbox="0 0 17.6 11.075" width="17.6" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.075)"> <g transform="translate(72,-63.14)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>虽然终点的值不同<S.vg height="11.05" id="M83" style="vertical-align:-3.2316pt;width:17.575001px;" version="1.1" viewbox="0 0 17.575001 11.05" width="17.575001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.05)"> <g transform="translate(72,-63.16)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>（参见例子<一种HR.E.f="#ex1">3.1</一种>和<一种HR.E.f="#ex2">3.2</一种>）。</P.><H5.一世D.=“S.E.c3.2">3.2。管状导体中电流密度的计算</H5.><P.>在[中，在[中，详细描述了一种用于计算孤立固体管状导体中的电流密度的方法<一种HR.E.f="#B6">8.</一种>]作为模型2.它被证明在[<一种HR.E.f="#B6">8.</一种>模型2的解决方案导致与（<一种HR.E.f="#EEq3">2.3</一种>）。[的方法中描述的方法的基本优势<一种HR.E.f="#B6">8.</一种>]这是，为了计算解决方案，没有必要知道<S.vg height="16.0375" id="M84" style="vertical-align:-4.28859pt;width:37.137501px;" version="1.1" viewbox="0 0 37.137501 16.0375" width="37.137501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.3765302" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -65.56,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-57.31,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> /</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.8648672" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。在本小节中，计算方法<S.vg height="15.675" id="M85" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>描述了复合导体的内导体。</P.><P.>我们选择部门<S.vg height="14.325" id="M86" style="vertical-align:-3.20526pt;width:20.862499px;" version="1.1" viewbox="0 0 20.862499 14.325" width="20.862499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.325)"> <g transform="translate(72,-60.54)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.07,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>间隔<S.vg height="14.5375" id="M87" style="vertical-align:-3.25793pt;width:51.087502px;" version="1.1" viewbox="0 0 51.087502 14.5375" width="51.087502" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.5375)"> <g transform="translate(72,-60.37)"> <text transform="matrix(1,0,0,-1,-71.95,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> [</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.69,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-55.09,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-44.78,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-35.34,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</GydF4y2Batspan> </text> </g> </g> </svg>借助点<S.vg height="12.525" id="M88" style="vertical-align:-3.25793pt;width:160.53751px;" version="1.1" viewbox="0 0 160.53751 12.525" width="160.53751" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.525)"> <g transform="translate(72,-61.98)"> <text transform="matrix(1,0,0,-1,-71.95,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-55.78,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-38.64,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-27.57,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-10.43,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,0.64,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> ⋯</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.156996" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="41.197384" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,46.95,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。通过该部门<S.vg height="14.325" id="M89" style="vertical-align:-3.20526pt;width:20.862499px;" version="1.1" viewbox="0 0 20.862499 14.325" width="20.862499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.325)"> <g transform="translate(72,-60.54)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.07,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，我们可以将指挥划分为<S.vg height="7.1374998" id="M90" style="vertical-align:-0.10033pt;width:11.225px;" version="1.1" viewbox="0 0 11.225 7.1374998" width="11.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.1375)"> <g transform="translate(72,-66.29)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>部分导体，具有横截面<S.vg height="10.7375" id="M91" style="vertical-align:-0.13794pt;width:8.6000004px;" version="1.1" viewbox="0 0 8.6000004 10.7375" width="8.6000004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.7375)"> <g transform="translate(72,-63.41)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>导体是由圆圈确定的环<S.vg height="12.4625" id="M92" style="vertical-align:-4.37273pt;width:57.924999px;" version="1.1" viewbox="0 0 57.924999 12.4625" width="57.924999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.4625)"> <g transform="translate(72,-62.03)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.604944" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.24,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.9098721" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="9.6534557" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="15.648576" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>和<S.vg height="12.4625" id="M93" style="vertical-align:-4.37273pt;width:44.950001px;" version="1.1" viewbox="0 0 44.950001 12.4625" width="44.950001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.4625)"> <g transform="translate(72,-62.03)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.604944" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.24,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.9098721" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。要点<S.vg height="14.7125" id="M94" style="vertical-align:-3.2316pt;width:151.21249px;" version="1.1" viewbox="0 0 151.21249 14.7125" width="151.21249" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.89,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.540749" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="23.793209" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.833599" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="42.085098" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="47.286346" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="53.537846" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="58.751598" y="0"> ......</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="73.342598" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="78.543846" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="90.209145" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="101.54937" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>选择，使得部分导体具有相同的横截面。这意味着它持有<S.P.一种Nclass="equation" id="EEq9"> <svg height="38.0625" id="M95" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 38.0625" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,38.0625)"> <g transform="translate(72,-41.55)"> <text transform="matrix(1,0,0,-1,82.49,50.45)"> <tspan style="font-size: 12.50px; " x="35.639999" y="4.9200001"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="43.009998" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.7523403" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.780226" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,130.6,55.46)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="0" y="9.1499996"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="9.1499996"> 那</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.9098721" y="9.1499996"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,143.53,50.45)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,159.97,55.46)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="0" y="9.2200003"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="9.2200003"> 那</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.9098721" y="9.2200003"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="9.6534557" y="9.2200003"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="15.648576" y="9.2200003"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,180.5,45.53)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="82.529999" y="-15.5"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="96.379997" y="-12.99"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="102.23" y="-15.5"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.6800003" y="-4.9200001"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="24.84614" y="-4.9200001"> W.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="33.873306" y="-4.9200001"> H</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="40.124805" y="-4.9200001"> E.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="45.676136" y="-4.9200001"> R.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="49.827133" y="-4.9200001"> E.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="59.541965" y="-4.9200001"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="69.281799" y="-4.9200001"> =</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,287.83,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="0" y="8.6899996"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="8.6899996"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,300.04,61.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,316.49,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="0" y="9.21"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="9.21"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,324.09,58.52)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 263.03,53.58 66.91,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,292.04,41.7)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="39.09" y="-8.75"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="172.71001" y="-11.95"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="176.8735" y="-11.95"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="183.125" y="-11.95"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="186.25075" y="-11.95"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="192.50224" y="-11.95"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>导体电阻率是恒定的，因此导体中的电流密度相对于<S.vg height="7.0124998" id="M96" style="vertical-align:-0.0pt;width:6.5px;" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，因此它可以在任何时间内逐时地用任意精度来近似由恒定的函数，使得在其中<S.vg height="10.7375" id="M97" style="vertical-align:-0.13794pt;width:8.6000004px;" version="1.1" viewbox="0 0 8.6000004 10.7375" width="8.6000004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.7375)"> <g transform="translate(72,-63.41)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>局部导体是它的幅度<S.vg height="14.7125" id="M98" style="vertical-align:-3.2316pt;width:30.4125px;" version="1.1" viewbox="0 0 30.4125 14.7125" width="30.4125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.2,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-59.96,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.0769377" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>，独立于<S.vg height="7.0124998" id="M99" style="vertical-align:-0.0pt;width:6.5px;" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。一种趋势<S.vg height="14.7125" id="M100" style="vertical-align:-3.2316pt;width:38.262501px;" version="1.1" viewbox="0 0 38.262501 14.7125" width="38.262501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2765059" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.92,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.68,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.0769377" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>流过了<S.vg height="10.7375" id="M101" style="vertical-align:-0.13794pt;width:8.6000004px;" version="1.1" viewbox="0 0 8.6000004 10.7375" width="8.6000004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.7375)"> <g transform="translate(72,-63.41)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>部分导体。这<S.vg height="10.7375" id="M102" style="vertical-align:-0.13794pt;width:8.6000004px;" version="1.1" viewbox="0 0 8.6000004 10.7375" width="8.6000004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.7375)"> <g transform="translate(72,-63.41)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>他和<S.vg height="13.45" id="M103" style="vertical-align:-2.21957pt;width:44.474998px;" version="1.1" viewbox="0 0 44.474998 13.45" width="44.474998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.715791" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.056011" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="31.307512" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>平面之间的部分导体<S.vg height="11.0625" id="M104" style="vertical-align:-3.13504pt;width:41.200001px;" version="1.1" viewbox="0 0 41.200001 11.0625" width="41.200001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0625)"> <g transform="translate(72,-63.15)"> <text transform="matrix(1,0,0,-1,-71.95,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.7023277" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.742718" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-43.96,63.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>和<S.vg height="11.0625" id="M105" style="vertical-align:-3.13504pt;width:41.200001px;" version="1.1" viewbox="0 0 41.200001 11.0625" width="41.200001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0625)"> <g transform="translate(72,-63.15)"> <text transform="matrix(1,0,0,-1,-71.95,66.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.7023277" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.742718" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-43.96,63.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> </g> </g> </svg>可以由集总电路代替。为了<S.vg height="10.7375" id="M106" style="vertical-align:-0.13794pt;width:8.6000004px;" version="1.1" viewbox="0 0 8.6000004 10.7375" width="8.6000004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.7375)"> <g transform="translate(72,-63.41)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>Th电路，它由Kirchhoff的法律持有<S.P.一种Nclass="equation" id="EEq10"> <svg height="17.112499" id="M107" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 17.112499" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.1125)"> <g transform="translate(72,-58.31)"> <text transform="matrix(1,0,0,-1,76.48,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,85.29,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="10.738704" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,102.99,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.0769377" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.016103" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="26.356323" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,138.17,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,145.49,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.0769377" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.016103" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="26.356323" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,180.67,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="6.1964159" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="8.3844156" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,196.38,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.0769377" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.703768" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="27.744158" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="33.995659" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="49.161797" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="59.414257" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="71.454643" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="77.706146" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="82.919899" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="89.171394" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="94.372643" y="0"> ......</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="108.96365" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="114.1774" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="123.16705" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="134.50728" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="140.75877" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="268.37" y="1.09"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="272.53351" y="1.09"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="278.785" y="1.09"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="281.91074" y="1.09"> 6.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="288.16226" y="1.09"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>在哪里<S.vg height="15.775" id="M108" style="vertical-align:-4.37273pt;width:28.174999px;" version="1.1" viewbox="0 0 28.174999 15.775" width="28.174999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.775)"> <g transform="translate(72,-59.38)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-63.14,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="6.1964159" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="8.3844156" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>是电压诱导的电压<S.vg height="10.7375" id="M109" style="vertical-align:-0.13794pt;width:8.6000004px;" version="1.1" viewbox="0 0 8.6000004 10.7375" width="8.6000004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.7375)"> <g transform="translate(72,-63.41)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>电路和<S.vg height="14.3625" id="M110" style="vertical-align:-3.2316pt;width:17.700001px;" version="1.1" viewbox="0 0 17.700001 14.3625" width="17.700001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.3625)"> <g transform="translate(72,-60.51)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-63.14,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>和<S.vg height="14.6875" id="M111" style="vertical-align:-3.49493pt;width:30.6625px;" version="1.1" viewbox="0 0 30.6625 14.6875" width="30.6625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.6875)"> <g transform="translate(72,-60.25)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-63.14,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="10.738704" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>替代各部分导体的电阻上的电压。以下持有。<S.P.一种Nclass="equation" id="EEq11"> <svg height="19.35" id="M112" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 19.35" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.35)"> <g transform="translate(72,-56.52)"> <text transform="matrix(1,0,0,-1,126,61.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,134.82,58.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="10.738704" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,153.21,61.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,173.37,58.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,182.08,61.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,200.4,58.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,203.62,61.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,209.85,58.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.3759999" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,225.36,58.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.8499999" y="-2.51"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,237.96,58.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="10.738704" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,256.35,61.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,274.45,58.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,279.69,58.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.9299998" y="-2.51"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="185.06" y="-2.51"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="189.2235" y="-2.51"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="195.47501" y="-2.51"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="198.60075" y="-2.51"> 7.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="204.85225" y="-2.51"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span></p> <p>让我们选择积分<S.vg height="12.4625" id="M113" style="vertical-align:-3.20526pt;width:115.4px;" version="1.1" viewbox="0 0 115.4 12.4625" width="115.4" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.4625)"> <g transform="translate(72,-62.03)"> <text transform="matrix(1,0,0,-1,-71.95,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.76,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.41,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-41.19,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-32.84,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> ⋯</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.169498" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="41.197384" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,13.56,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>这样<S.vg height="15.0875" id="M114" style="vertical-align:-4.37273pt;width:103.0375px;" version="1.1" viewbox="0 0 103.0375 15.0875" width="103.0375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.0875)"> <g transform="translate(72,-59.93)"> <text transform="matrix(1,0,0,-1,-71.95,64.34)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,61.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.9098721" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="9.6534557" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="15.648576" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-42.85,64.34)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-25.63,61.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-16.91,64.34)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,0.23,61.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.9098721" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。足够大的<S.vg height="7.1374998" id="M115" style="vertical-align:-0.10033pt;width:11.225px;" version="1.1" viewbox="0 0 11.225 7.1374998" width="11.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.1375)"> <g transform="translate(72,-66.29)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，围绕矩形边界引起的电动势<S.vg height="14.925" id="M116" style="vertical-align:-3.49493pt;width:153.83749px;" version="1.1" viewbox="0 0 153.83749 14.925" width="153.83749" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.925)"> <g transform="translate(72,-60.06)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-63.82,60.47)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-55.11,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> [</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="16.191385" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-33.72,60.47)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-28.48,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-18.08,60.47)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="10.738704" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-2.46,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.926662" y="0"> ×</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="17.716751" y="0"> [</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.880251" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,25.66,60.47)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,30.53,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2137508" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,41.98,60.47)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,46.86,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</GydF4y2Batspan> </text> </g> </g> </svg>不同，从电压一点<S.vg height="15.775" id="M117" style="vertical-align:-4.37273pt;width:28.174999px;" version="1.1" viewbox="0 0 28.174999 15.775" width="28.174999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.775)"> <g transform="translate(72,-59.38)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-63.14,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="6.1964159" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="8.3844156" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>在这方面诱发<S.vg height="10.7375" id="M118" style="vertical-align:-0.13794pt;width:8.6000004px;" version="1.1" viewbox="0 0 8.6000004 10.7375" width="8.6000004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.7375)"> <g transform="translate(72,-63.41)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>电路以便使用（<一种HR.E.f="#EEq11">3.7</一种>）和（<一种HR.E.f="#EEq5">3.1</一种>）（和<S.vg height="14.7125" id="M119" style="vertical-align:-3.2316pt;width:55.512501px;" version="1.1" viewbox="0 0 55.512501 14.7125" width="55.512501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.6,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.91,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.291889" y="0"> /</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.767723" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-30.86,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>），（<一种HR.E.f="#EEq10">3.6</一种>）是形式<S.P.一种Nclass="equation" id="EEq12"> <svg height="41.775002" id="M120" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 41.775002" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,41.775)"> <g transform="translate(72,-38.58)"> <text transform="matrix(1,0,0,-1,50.96,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,57.71,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="10.738704" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,75.41,52.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1599998" y="0.0099999998"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.0734386" y="0.0099999998"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.012604" y="0.0099999998"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="26.352825" y="0.0099999998"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,108.52,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,115.85,52.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1599998" y="0.0099999998"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.0734386" y="0.0099999998"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.012604" y="0.0099999998"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="26.352825" y="0.0099999998"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,148.56,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="12" y="-16.389999"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,157.95,52.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> σ.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,155.95,41.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0674081" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="11.062528" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,171.39,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> φ.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,180.93,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> ℓ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,198.56,59.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> D.</GydF4y2Batspan> </text> <g> <path d="m 196.6,55.47 10.16,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,196.6,43.6)"> <tspan style="font-size: 12.50px; " x="11.36" y="-8.75"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="0" y="0"> D.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,214.71,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,222.36,52.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1599998" y="0.0099999998"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.0734386" y="0.0099999998"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.712772" y="0.0099999998"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="27.740658" y="0.0099999998"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="33.992157" y="0.0099999998"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="49.170799" y="0.0099999998"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="59.42326" y="0.0099999998"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="71.451149" y="0.0099999998"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="77.702644" y="0.0099999998"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="82.916397" y="0.0099999998"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="89.1679" y="0.0099999998"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="94.381645" y="0.0099999998"> ......</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="108.96014" y="0.0099999998"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="114.1739" y="0.0099999998"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="125.82669" y="0.0099999998"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="137.17941" y="0.0099999998"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="242.39" y="0.2"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="246.5535" y="0.2"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="252.80499" y="0.2"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="255.93076" y="0.2"> 8.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="262.18225" y="0.2"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>同时<S.P.一种Nclass="equation" id="EEq13"> <svg height="39.674999" id="M121" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 39.674999" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,39.675)"> <g transform="translate(72,-40.26)"> <text transform="matrix(1,0,0,-1,153.68,54.06)"> <tspan style="font-size: 12.50px; " x="0" y="0"> φ.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,163.22,50.94)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> ℓ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,177,54.06)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.04" y="7.6900001"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,196.04,68.09)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,199.68,65.9)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 6.25px; " x="3.3885839" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 6.25px; " x="7.6712041" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,194.79,42.57)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,198.42,40.38)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,213.55,54.06)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ℬ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,225.43,50.94)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,233.08,54.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.2647228" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.50372" y="0"> D.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.75522" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="26.856443" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="231.67" y="1.0700001"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="235.8335" y="1.0700001"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="242.08499" y="1.0700001"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="245.21075" y="1.0700001"> 9.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="251.46225" y="1.0700001"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>在哪里<S.vg height="14.8875" id="M122" style="vertical-align:-3.2316pt;width:38.712502px;" version="1.1" viewbox="0 0 38.712502 14.8875" width="38.712502" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.8875)"> <g transform="translate(72,-60.09)"> <text transform="matrix(1,0,0,-1,-71.95,63.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ℬ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-60.07,60.23)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.51,63.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.2647228" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>是每单位电流密度的磁场，兴奋<S.vg height="11.0375" id="M123" style="vertical-align:-0.13794pt;width:9.1750002px;" version="1.1" viewbox="0 0 9.1750002 11.0375" width="9.1750002" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0375)"> <g transform="translate(72,-63.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ℓ</GydF4y2Batspan> </text> </g> </g> </svg>部分导体。</P.><P.>对于提供正弦电流的导体，电流密度或复杂电流密度<S.vg height="10.7375" id="M124" style="vertical-align:-0.13794pt;width:8.6000004px;" version="1.1" viewbox="0 0 8.6000004 10.7375" width="8.6000004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.7375)"> <g transform="translate(72,-63.41)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>局部导体将是<S.P.一种Nclass="equation" id="EEq14"> <svg height="20.987499" id="M125" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 20.987499" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,20.9875)"> <g transform="translate(72,-55.21)"> <text transform="matrix(1,0,0,-1,145.02,59.82)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,151.77,56.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,159.1,59.83)"> <tspan style="font-size: 12.50px; " x="28.370001" y="-2.53"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="27.75" y="0.0099999998"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.0769377" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.703768" y="0"> =</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,195.1,56.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,202.43,59.82)"> <tspan style="font-size: 12.50px; " x="18.76" y="2.51"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="0" y="0"> S.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.863667" y="0"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.3395014" y="0"> N</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="24.610001" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="33.124542" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="39.801144" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="51.15387" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,260.64,56.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,265.88,57.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="192.61" y="-3.1700001"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="196.7735" y="-3.1700001"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="203.02499" y="-3.1700001"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="206.15074" y="-3.1700001"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="212.40225" y="-3.1700001"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="218.65375" y="-3.1700001"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>要么<S.P.一种Nclass="equation" id="EEq15"> <svg height="24.475" id="M126" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 24.475" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,24.475)"> <g transform="translate(72,-52.42)"> <text transform="matrix(1,0,0,-1,103.15,59.82)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,109.9,56.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 103.15,53.71 11.99,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,117.22,59.82)"> <tspan style="font-size: 12.50px; " x="0" y="0"> E.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.551332" y="0"> X</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.802832" y="0"> P.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.217831" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="26.38133" y="0"> j</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.857164" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="38.371708" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="42.285145" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="48.536648" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="63.702785" y="0"> W.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="72.72995" y="0"> H</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="78.981453" y="0"> E.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="84.532784" y="0"> R.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="88.683777" y="0"> E.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="98.398613" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,222.37,56.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 215.62,53.71 11.99,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,231.09,59.82)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.66" y="-2.54"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.03" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,251.38,56.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,258.7,59.82)"> <tspan style="font-size: 12.50px; " x="22.219999" y="2.51"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="0" y="0"> E.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.551332" y="0"> X</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.802832" y="0"> P.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.08" y="0"> j</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="31.555834" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,297.3,56.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,302.54,57.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.9400001" y="-2.51"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="155.95" y="-1.78"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="160.11349" y="-1.78"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="166.36501" y="-1.78"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="169.49075" y="-1.78"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="175.74225" y="-1.78"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="181.99374" y="-1.78"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>对于复杂的电流密度，（<一种HR.E.f="#EEq12">3.8</一种>）可以作为方程式被重写为<S.P.一种Nclass="equation" id="EEq16"> <svg height="41.775002" id="M127" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 41.775002" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,41.775)"> <g transform="translate(72,-38.58)"> <text transform="matrix(1,0,0,-1,75.48,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,82.23,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="10.738704" y="0"> 1</GydF4y2Batspan> </text> <g> <path d="m 75.48,45.98 22.36,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,100.62,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,118.72,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 111.96,46.24 12,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,126.74,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.327718" y="0"> j</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="14.803552" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="23.318094" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,156.42,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 一世</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,163.96,65.61)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,161.36,52.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> σ.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,159.35,41.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0674081" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="11.062528" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,174.79,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> φ.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,184.33,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> ℓ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,194.64,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,201.39,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> </text> <g> <path d="m 194.64,46.24 12.32,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,210.43,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="33.458027" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="43.710487" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="55.738373" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="61.989876" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="67.203629" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="73.455124" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="78.668877" y="0"> ......</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="93.247375" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="98.461128" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="110.11392" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="121.45414" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="127.70564" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="248.06" y="0.19"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="252.2235" y="0.19"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="258.47501" y="0.19"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="261.60074" y="0.19"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="267.85223" y="0.19"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="274.10376" y="0.19"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>关系（<一种HR.E.f="#EEq16">3.12</一种>）是一个系统<S.vg height="10.8125" id="M128" style="vertical-align:-0.10033pt;width:36.6875px;" version="1.1" viewbox="0 0 36.6875 10.8125" width="36.6875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.8125)"> <g transform="translate(72,-63.35)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.652796" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.993017" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>用于未知功能的方程<S.vg height="19.875" id="M129" style="vertical-align:-7.3697pt;width:30.4125px;" version="1.1" viewbox="0 0 30.4125 19.875" width="30.4125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.875)"> <g transform="translate(72,-56.1)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.2,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.39 11.99,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-59.96,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.0769377" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>那<S.vg height="12.8875" id="M130" style="vertical-align:-1.76814pt;width:92.474998px;" version="1.1" viewbox="0 0 92.474998 12.8875" width="92.474998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.8875)"> <g transform="translate(72,-61.69)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.239957" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.280346" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.531845" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="33.745598" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="39.997097" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="45.198345" y="0"> ......</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="59.789345" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="65.003098" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。这些功能不能通过（<一种HR.E.f="#EEq16">3.12</一种>）由于未知数的数量是大于等式数的一个。系统（<一种HR.E.f="#EEq16">3.12</一种>）可以通过添加方程来补充<S.P.一种Nclass="equation" id="EEq17"> <svg height="41.775002" id="M131" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 41.775002" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,41.775)"> <g transform="translate(72,-38.58)"> <text transform="matrix(1,0,0,-1,175.35,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,190.4,65.61)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,187.8,52.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> σ.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,185.79,41.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0674081" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="11.062528" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,201.23,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,207.98,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> </text> <g> <path d="m 201.23,46.24 12.32,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,217.02,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,235.06,49.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 229.06,46.24 9.22,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,238.28,52.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="220.21001" y="0.19"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="224.3735" y="0.19"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="230.625" y="0.19"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="233.75075" y="0.19"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="240.00224" y="0.19"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="246.25375" y="0.19"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>这表达了分量<S.vg height="19.512501" id="M132" style="vertical-align:-7.3697pt;width:11.65px;" version="1.1" viewbox="0 0 11.65 19.512501" width="11.65" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.95,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 9.22,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>通过导体的总电流是规定的或通过在部分导体中规定电流密度相量的值，例如，<S.vg height="19.512501" id="M133" style="vertical-align:-7.3697pt;width:14px;" version="1.1" viewbox="0 0 14 19.512501" width="14" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.2,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 11.1,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>那<S.vg height="12.3" id="M134" style="vertical-align:-1.29163pt;width:64.6875px;" version="1.1" viewbox="0 0 64.6875 12.3" width="64.6875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.3)"> <g transform="translate(72,-62.16)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.7148314" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.75522" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="30.732374" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="42.772762" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。</P.><P.><S.P.一种Nclass="statement" id="ex1"><span class="statement-title"><i class="statement-title">例3.1。</一世></S.P.一种N>铜管状导体具有由半径给出的横截面<S.vg height="14.9" id="M135" style="vertical-align:-3.2316pt;width:37.724998px;" version="1.1" viewbox="0 0 37.724998 14.9" width="37.724998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.9)"> <g transform="translate(72,-60.08)"> <text transform="matrix(1,0,0,-1,-71.95,63.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-60.16,63.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> 5.</GydF4y2Batspan> </text> </g> </g> </svg>毫米，<S.vg height="14.7125" id="M136" style="vertical-align:-3.2316pt;width:47.150002px;" version="1.1" viewbox="0 0 47.150002 14.7125" width="47.150002" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.87,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>mm（见图<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig1/" target="_blank">1</一种>）;电阻率的值在20°C的温度下<S.vg height="16.8375" id="M137" style="vertical-align:-2.29482pt;width:149.10001px;" version="1.1" viewbox="0 0 149.10001 16.8375" width="149.10001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.8375)"> <g transform="translate(72,-58.53)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.7398367" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.780226" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.031727" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="31.157476" y="0"> 6.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="37.408978" y="0"> 7.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="43.660477" y="0"> 8.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="52.687641" y="0"> ×</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="63.465229" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="69.716728" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,4.03,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 8.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,19.07,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ω.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.077898" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.429422" y="0"> m</GydF4y2Batspan> </text> </g> </g> </svg>已从[<一种HR.E.f="#B11">13.</一种>]，<S.vg height="16.9" id="M138" style="vertical-align:-2.34499pt;width:72.050003px;" version="1.1" viewbox="0 0 72.050003 16.9" width="72.050003" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.9)"> <g transform="translate(72,-58.48)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.402496" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.442884" y="0"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.694386" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="34.945885" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="40.159637" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="46.411137" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-19.28,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 3.</GydF4y2Batspan> </text> </g> </g> </svg>，和<S.vg height="14.2875" id="M139" style="vertical-align:-0.17555pt;width:21.85px;" version="1.1" viewbox="0 0 21.85 14.2875" width="21.85" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.2875)"> <g transform="translate(72,-60.57)"> <text transform="matrix(1,0,0,-1,-71.95,60.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-59.45,65.96)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 6.</GydF4y2Batspan> </text> </g> </g> </svg>Hz，和价值<S.vg height="16.0375" id="M140" style="vertical-align:-4.28859pt;width:58.450001px;" version="1.1" viewbox="0 0 58.450001 16.0375" width="58.450001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-51.21,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6268301" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.667219" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg> <svg height="13.9875" id="M141" style="vertical-align:-0.17555pt;width:71.537498px;" version="1.1" viewbox="0 0 71.537498 13.9875" width="71.537498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.9875)"> <g transform="translate(72,-60.81)"> <text transform="matrix(1,0,0,-1,-71.95,61.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 一种</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.802832" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.154356" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-44.06,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-33.19,61.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ∠</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-18.38,66.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∘</GydF4y2Batspan> </text> </g> </g> </svg>给出。<GydF4y2Babr>依赖<S.vg height="18.049999" id="M142" style="vertical-align:-2.21957pt;width:27.225px;" version="1.1" viewbox="0 0 27.225 18.049999" width="27.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,18.05)"> <g transform="translate(72,-57.56)"> <text transform="matrix(1,0,0,-1,-71.33,62.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-0.62" y="2.54"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6194768" y="2.54"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.782976" y="2.54"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="16.884199" y="2.54"> ）</GydF4y2Batspan> </text> </g> </g> </svg>电流密度的模块<S.vg height="7.0124998" id="M143" style="vertical-align:-0.0pt;width:6.5px;" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>图中示出了<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig3/" target="_blank">3.</一种>。解决方案<S.vg height="13.8" id="M144" style="vertical-align:-2.34499pt;width:43.8125px;" version="1.1" viewbox="0 0 43.8125 13.8" width="43.8125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.8)"> <g transform="translate(72,-60.96)"> <text transform="matrix(1,0,0,-1,-71.95,63.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.402496" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.442884" y="0"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.694386" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg> Hz can be seen in Figure<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig3/" target="_blank">3.</一种>作为一个常量但是<S.vg height="16.1625" id="M145" style="vertical-align:-4.28859pt;width:95.6875px;" version="1.1" viewbox="0 0 95.6875 16.1625" width="95.6875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.1625)"> <g transform="translate(72,-59.07)"> <text transform="matrix(1,0,0,-1,-71.95,63.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.36 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,63.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,60.27)"> <tspan style="font-size: 8.75px; " x="0" y="0"> O.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-49.56,63.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6268301" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.667219" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.918718" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.04447" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.295967" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="41.54747" y="0"> 6.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="47.798969" y="0"> 9.</GydF4y2Batspan> </text> </g> </g> </svg> <svg height="14.175" id="M146" style="vertical-align:-0.17555pt;width:104.1px;" version="1.1" viewbox="0 0 104.1 14.175" width="104.1" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.175)"> <g transform="translate(72,-60.66)"> <text transform="matrix(1,0,0,-1,-71.95,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 一种</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.802832" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.154356" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-44.06,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-29.03,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ∠</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="14.816055" y="0"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.067554" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="24.193304" y="0"> 4.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="30.444805" y="0"> 8.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,7.67,66.06)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∘</GydF4y2Batspan> </text> </g> </g> </svg>。phasor.<S.vg height="15.675" id="M147" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>和依赖的图表<S.vg height="18.049999" id="M148" style="vertical-align:-2.21957pt;width:27.225px;" version="1.1" viewbox="0 0 27.225 18.049999" width="27.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,18.05)"> <g transform="translate(72,-57.56)"> <text transform="matrix(1,0,0,-1,-71.33,62.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-0.62" y="2.54"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6194768" y="2.54"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.782976" y="2.54"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="16.884199" y="2.54"> ）</GydF4y2Batspan> </text> </g> </g> </svg>由对决定<S.vg height="19.875" id="M149" style="vertical-align:-7.3697pt;width:45.075001px;" version="1.1" viewbox="0 0 45.075001 19.875" width="45.075001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.875)"> <g transform="translate(72,-56.1)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.6,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-57.36,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-45.39,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -52.15,57.39 12,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-40.15,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>为了<S.vg height="12.8875" id="M150" style="vertical-align:-1.76814pt;width:92.474998px;" version="1.1" viewbox="0 0 92.474998 12.8875" width="92.474998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.8875)"> <g transform="translate(72,-61.69)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.239957" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.280346" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.531845" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="33.745598" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="39.997097" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="45.198345" y="0"> ......</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="59.789345" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="65.003098" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。根据 [<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]，解决（<一种HR.E.f="#EEq3">2.3</一种>）为了<S.vg height="15.675" id="M151" style="vertical-align:-4.28859pt;width:55.075001px;" version="1.1" viewbox="0 0 55.075001 15.675" width="55.075001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-60.23,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.555412" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -37.67,60.9 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>和一个给定的<S.vg height="13.4875" id="M152" style="vertical-align:-2.34499pt;width:10.675px;" version="1.1" viewbox="0 0 10.675 13.4875" width="10.675" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.4875)"> <g transform="translate(72,-61.21)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，它足以知道<S.vg height="15.85" id="M153" style="vertical-align:-4.1381pt;width:84.474998px;" version="1.1" viewbox="0 0 84.474998 15.85" width="84.474998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.61 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-62.27,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.01,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-49.79,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="17.704248" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -32.08,60.61 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-22.4,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-13.14,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-8.63,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>和<S.vg height="15.85" id="M154" style="vertical-align:-4.1381pt;width:37.599998px;" version="1.1" viewbox="0 0 37.599998 15.85" width="37.599998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.61 12.04,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-59.91,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-50.64,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.14,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>（看（<一种HR.E.f="#EEq6">3.2</一种>） - （<一种HR.E.f="#EEq6">3.4</一种>）））。这意味着（<一种HR.E.f="#EEq3">2.3</一种>）由价值观唯一<S.vg height="16.0375" id="M155" style="vertical-align:-4.28859pt;width:80.912498px;" version="1.1" viewbox="0 0 80.912498 16.0375" width="80.912498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-51.21,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="17.704248" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -33.5,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-25.25,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-15.99,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-11.48,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>，和<S.vg height="15.85" id="M156" style="vertical-align:-4.1381pt;width:37.599998px;" version="1.1" viewbox="0 0 37.599998 15.85" width="37.599998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.61 12.04,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-59.91,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-50.64,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.14,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>。借助图<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig3/" target="_blank">3.</一种>，我们可以看到给定的<S.vg height="16.0375" id="M157" style="vertical-align:-4.28859pt;width:31.25px;" version="1.1" viewbox="0 0 31.25 16.0375" width="31.25" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-51.21,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>没有无数的解决方案（<一种HR.E.f="#EEq3">2.3</一种>）依赖于<S.vg height="13.4875" id="M158" style="vertical-align:-2.34499pt;width:10.675px;" version="1.1" viewbox="0 0 10.675 13.4875" width="10.675" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.4875)"> <g transform="translate(72,-61.21)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>（一般来说<S.vg height="7.0124998" id="M159" style="vertical-align:-0.0pt;width:9.4125004px;" version="1.1" viewbox="0 0 9.4125004 7.0124998" width="9.4125004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>），即衍生品的价值<S.vg height="16.15" id="M160" style="vertical-align:-4.28859pt;width:36.787498px;" version="1.1" viewbox="0 0 36.787498 16.15" width="36.787498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.15)"> <g transform="translate(72,-59.08)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> D.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -65.7,60.37 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-57.45,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> /</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> D.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.727334" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>当时<S.vg height="11.05" id="M161" style="vertical-align:-3.2316pt;width:10.525px;" version="1.1" viewbox="0 0 10.525 11.05" width="10.525" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.05)"> <g transform="translate(72,-63.16)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>;这就是说，不知道这种衍生物的价值我们不能唯一地确定（<一种HR.E.f="#EEq3">2.3</一种>）对于给定的<S.vg height="13.4875" id="M162" style="vertical-align:-2.34499pt;width:10.675px;" version="1.1" viewbox="0 0 10.675 13.4875" width="10.675" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.4875)"> <g transform="translate(72,-61.21)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。它遵循这一点，直到我们解决（<一种HR.E.f="#EEq3">2.3</一种>）对于给定的<S.vg height="13.4875" id="M163" style="vertical-align:-2.34499pt;width:10.675px;" version="1.1" viewbox="0 0 10.675 13.4875" width="10.675" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.4875)"> <g transform="translate(72,-61.21)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>和<S.vg height="16.0375" id="M164" style="vertical-align:-4.28859pt;width:31.25px;" version="1.1" viewbox="0 0 31.25 16.0375" width="31.25" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-51.21,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>我们无法知道的价值<S.vg height="16.0375" id="M165" style="vertical-align:-4.28859pt;width:32.862499px;" version="1.1" viewbox="0 0 32.862499 16.0375" width="32.862499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-49.93,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>。设置值<S.vg height="15.85" id="M166" style="vertical-align:-4.1381pt;width:37.599998px;" version="1.1" viewbox="0 0 37.599998 15.85" width="37.599998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.61 12.04,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-59.91,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-50.64,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.14,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>，状况（<一种HR.E.f="#EEq6">3.4</一种>）不仅没有解决这个问题，而且还有对抗策略性。价值<S.vg height="15.85" id="M167" style="vertical-align:-4.1381pt;width:37.599998px;" version="1.1" viewbox="0 0 37.599998 15.85" width="37.599998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.61 12.04,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-59.91,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-50.64,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.14,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>唯一地确定通过导体的总电流，并且该电流只能通过导体等于计算的电流，因为电流也取决于设定值<S.vg height="16.0375" id="M168" style="vertical-align:-4.28859pt;width:31.25px;" version="1.1" viewbox="0 0 31.25 16.0375" width="31.25" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-51.21,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>。状况（<一种HR.E.f="#EEq6">3.2</一种>）和（<一种HR.E.f="#EEq6">3.4</一种>）要么（<一种HR.E.f="#EEq6">3.3</一种>）和（<一种HR.E.f="#EEq6">3.4</一种>）在不知道管状导体的情况下，不能正确设置。</S.P.一种N></P.><D.一世v class="floats-partial-section partial-carousel-wrapper" data-section="fig3"> <div class="floats-partial-content fig-content-fig3"> <div class="partial-carousel--single-image"> <img alt="" name="983678.fig.003" src="https://static-01.hindawi.com/articles/amp/volume-2011/983678/figures/983678.fig.003.jpg"> <br> <strong></strong> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图3.</S.P.一种N><一种一种R.一世一种-label="full view" class="caption-partial-url" href="//www.newsama.com/journals/amp/2011/983678/fig3/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <svg height="7.0124998" id="M169" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg> <a href="#ex1">3.1</一种><S.vg height="10.9125" id="M170" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 54.049999 10.9125" width="54.049999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.9125)"> <g transform="translate(72,-63.27)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.340461" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="24.38085" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="30.632351" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="36.88385" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg> <table> 电流密度模块对的依赖性GydF4y2Ba在示例中GydF4y2Ba;部分导体数量GydF4y2Ba。</GydF4y2Batable> </div> </div> </div> <h5 id="sec3.3">3.3。复合导体中电流密度的计算</H5.><P.>让我们首先考虑绝缘内和外导体的情况。这意味着在复合导体中，没有由此形成的电路<S.vg height="10.7375" id="M171" style="vertical-align:-0.13794pt;width:8.6000004px;" version="1.1" viewbox="0 0 8.6000004 10.7375" width="8.6000004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.7375)"> <g transform="translate(72,-63.41)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>近端导体，这是内导体的一部分，以及由此<S.vg height="13.45" id="M172" style="vertical-align:-2.21957pt;width:44.474998px;" version="1.1" viewbox="0 0 44.474998 13.45" width="44.474998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.715791" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.056011" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="31.307512" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>作为外导体的一部分，局部导体。内部和外导体之间的绝缘可以具有非零厚度，即，<S.vg height="14.75" id="M173" style="vertical-align:-3.25793pt;width:80.625px;" version="1.1" viewbox="0 0 80.625 14.75" width="80.625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.75)"> <g transform="translate(72,-60.2)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-55.19,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-38.74,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-25.84,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ></GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>，但情况<S.vg height="11.075" id="M174" style="vertical-align:-3.25793pt;width:55.162498px;" version="1.1" viewbox="0 0 55.162498 11.075" width="55.162498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.075)"> <g transform="translate(72,-63.14)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.94,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-36.8,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>，它在[<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]，不能被排除在外。为了<S.vg height="13.7" id="M175" style="vertical-align:-3.25793pt;width:43.375px;" version="1.1" viewbox="0 0 43.375 13.7" width="43.375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.7)"> <g transform="translate(72,-61.04)"> <text transform="matrix(1,0,0,-1,-71.95,64.34)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.604944" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.24,61.21)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>，由外导体激发的磁场为零。因此，外导体不能影响内导体，因此内导体中的电流密度是系统的解决方案（<一种HR.E.f="#EEq16">3.12</一种>）补充了phasor的价值<S.vg height="15.675" id="M176" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>在内部导体的某个点或相距的价值<S.vg height="19.512501" id="M177" style="vertical-align:-7.3697pt;width:11.65px;" version="1.1" viewbox="0 0 11.65 19.512501" width="11.65" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.95,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 9.22,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>在内导体。当然，Phasor.<S.vg height="15.675" id="M178" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>可以通过（<一种HR.E.f="#EEq3">2.3</一种>），只要我们知道数字<S.vg height="9.875" id="M179" style="vertical-align:-2.29482pt;width:7.7624998px;" version="1.1" viewbox="0 0 7.7624998 9.875" width="7.7624998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,9.875)"> <g transform="translate(72,-64.1)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>和<S.vg height="10.75" id="M180" style="vertical-align:-0.15048pt;width:9.375px;" version="1.1" viewbox="0 0 9.375 10.75" width="9.375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.75)"> <g transform="translate(72,-63.4)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>在条件下（<一种HR.E.f="#EEq4">2.4</一种>）。当前<S.vg height="19.512501" id="M181" style="vertical-align:-7.3697pt;width:11.65px;" version="1.1" viewbox="0 0 11.65 19.512501" width="11.65" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.95,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 9.22,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>可以设置，也可以通过内导体中的电流密度来计算，这可以在计算外导体中的电流密度之前确定。</P.><P.>我们将外导体分成<S.vg height="7.1374998" id="M182" style="vertical-align:-0.10033pt;width:7.8874998px;" version="1.1" viewbox="0 0 7.8874998 7.1374998" width="7.8874998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.1375)"> <g transform="translate(72,-66.29)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>部分导体通过部门<S.vg height="14.325" id="M183" style="vertical-align:-3.20526pt;width:18.5375px;" version="1.1" viewbox="0 0 18.5375 14.325" width="18.5375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.325)"> <g transform="translate(72,-60.54)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.07,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，由点决定<S.vg height="12.525" id="M184" style="vertical-align:-3.25793pt;width:127.775px;" version="1.1" viewbox="0 0 127.775 12.525" width="127.775" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.525)"> <g transform="translate(72,-61.98)"> <text transform="matrix(1,0,0,-1,-71.95,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.49,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-37.35,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-25,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> ⋯</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.169498" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="41.209888" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,21.31,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。类似于内导体，我们选择点<S.vg height="15.775" id="M185" style="vertical-align:-4.37273pt;width:371.38751px;" version="1.1" viewbox="0 0 371.38751 15.775" width="371.38751" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.775)"> <g transform="translate(72,-59.38)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.76,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="6.2139201" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="12.20904" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.2,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-28.98,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="6.2139201" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="12.20904" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-8.42,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> ⋯</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.169498" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="41.197384" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,37.98,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,46.71,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.540749" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="27.656635" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="39.684521" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="51.349819" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="62.690041" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="68.90403" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="82.444778" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,134.27,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="6.1964159" y="0"> ℓ</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="11.263824" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="17.258944" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,159.87,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,177.1,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="6.2139201" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="12.20904" y="0"> ℓ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,198.35,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,215.49,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> ℓ</GydF4y2Batspan> </text> </g> </g> </svg>。外导体中的电流密度是系统的解决方案<S.vg height="7.1374998" id="M186" style="vertical-align:-0.10033pt;width:7.8874998px;" version="1.1" viewbox="0 0 7.8874998 7.1374998" width="7.8874998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.1375)"> <g transform="translate(72,-66.29)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>相量的方程<S.vg height="19.875" id="M187" style="vertical-align:-7.3697pt;width:185.5125px;" version="1.1" viewbox="0 0 185.5125 19.875" width="185.5125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.875)"> <g transform="translate(72,-56.1)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.2,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.39 11.99,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-59.96,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.540749" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="23.793209" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.833599" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="47.486393" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="58.826614" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="65.078117" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="70.291862" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="81.944664" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="93.284882" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="99.536385" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="104.75014" y="0"> ......</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="119.34113" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="124.54238" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。首先<S.vg height="10.8125" id="M188" style="vertical-align:-0.10033pt;width:33.362499px;" version="1.1" viewbox="0 0 33.362499 10.8125" width="33.362499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.8125)"> <g transform="translate(72,-63.35)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.9896574" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.329878" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>等式（见）<一种HR.E.f="#EEq16">3.12</一种>））Kirchhoff为部分电路的定律：<S.P.一种Nclass="equation" id="EEq18"> <svg height="44.424999" id="M189" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 44.424999" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,44.425)"> <g transform="translate(72,-36.46)"> <text transform="matrix(1,0,0,-1,34.72,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,41.48,47.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="10.738704" y="0"> 1</GydF4y2Batspan> </text> <g> <path d="m 34.72,44.12 22.37,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,59.87,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,77.96,47.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 71.21,44.38 11.99,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,85.98,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> j</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="14.816055" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="23.330599" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,115.67,47.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> O.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,130.25,63.76)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,128.65,50.47)"> <tspan style="font-size: 12.50px; " x="0" y="0"> σ.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,120.54,39.34)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0674081" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="11.062528" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="17.276447" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="23.271568" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,148.19,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> φ.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,157.73,47.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> ℓ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,168.04,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,174.79,47.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> </text> <g> <path d="m 168.04,44.38 12.32,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,183.83,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,202.22,47.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> O.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,207.09,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ℰ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,216.47,47.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,221.71,50.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.166139" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.418598" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="37.458988" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="49.111786" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="60.452003" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="66.703506" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="71.917259" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="83.570053" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="94.910271" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="101.16177" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="106.37553" y="0"> ......</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="120.96652" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="126.16777" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="139.5835" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="150.93622" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="157.18771" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="236.78" y="-0.61000001"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="240.9435" y="-0.61000001"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="247.19499" y="-0.61000001"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="250.32076" y="-0.61000001"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="256.57224" y="-0.61000001"> 4.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="262.82376" y="-0.61000001"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>在哪里<S.vg height="14.8875" id="M190" style="vertical-align:-3.2316pt;width:18.4px;" version="1.1" viewbox="0 0 18.4 14.8875" width="18.4" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.8875)"> <g transform="translate(72,-60.09)"> <text transform="matrix(1,0,0,-1,-71.95,63.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ℰ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.57,60.23)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>是在矩形中引起的电动势<S.vg height="14.825" id="M191" style="vertical-align:-3.49493pt;width:117.7375px;" version="1.1" viewbox="0 0 117.7375 14.825" width="117.7375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.825)"> <g transform="translate(72,-60.14)"> <text transform="matrix(1,0,0,-1,-71.95,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> [</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.6,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-57.36,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.96,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="10.738704" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-31.34,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.926662" y="0"> ×</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="17.716751" y="0"> [</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.880251" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-3.22,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,1.65,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.2137508" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,13.1,60.55)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,17.98,63.67)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</GydF4y2Batspan> </text> </g> </g> </svg>通过内导体激发的磁通量的时间变化。其余的等式是某种电流密度值的处方<S.vg height="19.512501" id="M192" style="vertical-align:-7.3697pt;width:102.3875px;" version="1.1" viewbox="0 0 102.3875 19.512501" width="102.3875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.2,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 11.1,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-60.85,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.540749" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.893713" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="37.9216" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="46.898754" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="58.93914" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>，或当前量量的处方<S.vg height="19.512501" id="M193" style="vertical-align:-7.3697pt;width:13.2625px;" version="1.1" viewbox="0 0 13.2625 19.512501" width="13.2625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.95,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 10.51,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>在外导体中。</P.><P.><S.P.一种Nclass="statement" id="ex2"><span class="statement-title"><i class="statement-title">例3.2。</一世></S.P.一种N>内导体的横截面由半径给出<S.vg height="14.9375" id="M194" style="vertical-align:-3.25793pt;width:43.200001px;" version="1.1" viewbox="0 0 43.200001 14.9375" width="43.200001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.9375)"> <g transform="translate(72,-60.05)"> <text transform="matrix(1,0,0,-1,-71.95,63.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-55.78,63.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 5.</GydF4y2Batspan> </text> </g> </g> </svg> mm,<S.vg height="14.7125" id="M195" style="vertical-align:-3.2316pt;width:53.3125px;" version="1.1" viewbox="0 0 53.3125 14.7125" width="53.3125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.94,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg> mm;<S.vg height="13.6125" id="M196" style="vertical-align:-2.34499pt;width:36px;" version="1.1" viewbox="0 0 36 13.6125" width="36" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.6125)"> <g transform="translate(72,-61.11)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.402496" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.442884" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg> kHz. The example has 6 variants (see Table<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/tab1/" target="_blank">1</一种>）。<S.vg height="19.299999" id="M197" style="vertical-align:-4.28859pt;width:139.55px;" version="1.1" viewbox="0 0 139.55 19.299999" width="139.55" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.3)"> <g transform="translate(72,-56.56)"> <text transform="matrix(1,0,0,-1,-71.95,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.85 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,57.76)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-45.55,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6268301" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.667219" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.00672" y="0"> 一种</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="39.809551" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="46.161076" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,10.35,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,21.22,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ∠</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,36.03,66.06)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∘</GydF4y2Batspan> </text> </g> </g> </svg>总是在外导体中给出。在内导体中，在变体1-5中它<S.vg height="16.0375" id="M198" style="vertical-align:-4.28859pt;width:96.612503px;" version="1.1" viewbox="0 0 96.612503 16.0375" width="96.612503" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-45,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6268301" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.667219" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -25.32,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-17.07,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-7.81,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,1.07,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>，在Variant 6中<S.vg height="16.0375" id="M199" style="vertical-align:-4.28859pt;width:66.224998px;" version="1.1" viewbox="0 0 66.224998 16.0375" width="66.224998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-45,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6268301" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.667219" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>。铜电阻率与示例中的相同<一种HR.E.f="#ex1">3.1</一种>;铝电阻率<S.vg height="14.375" id="M200" style="vertical-align:-0.3135pt;width:111.45px;" version="1.1" viewbox="0 0 111.45 14.375" width="111.45" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.375)"> <g transform="translate(72,-60.5)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.3772497" y="0"> 6.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.62875" y="0"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="24.655916" y="0"> ×</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.433502" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="41.685001" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-24.01,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 8.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-11.05,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ω.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.065395" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.429422" y="0"> m</GydF4y2Batspan> </text> </g> </g> </svg>已被取自[<一种HR.E.f="#B11">13.</一种>]。<GydF4y2Babr>依赖<S.vg height="18.049999" id="M201" style="vertical-align:-2.21957pt;width:27.225px;" version="1.1" viewbox="0 0 27.225 18.049999" width="27.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,18.05)"> <g transform="translate(72,-57.56)"> <text transform="matrix(1,0,0,-1,-71.33,62.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-0.62" y="2.54"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6194768" y="2.54"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.782976" y="2.54"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="16.884199" y="2.54"> ）</GydF4y2Batspan> </text> </g> </g> </svg>电流密度模块<S.vg height="7.0124998" id="M202" style="vertical-align:-0.0pt;width:6.5px;" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>在示例中<一种HR.E.f="#ex2">3.2</一种>图中示出了<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig4/" target="_blank">4.</一种>。选择变型1，使其实际上并不涉及复合导体。当然，变型1中的复合导体的计算结果与管状导体的计算结果相同。价值<S.vg height="18.049999" id="M203" style="vertical-align:-2.21957pt;width:27.225px;" version="1.1" viewbox="0 0 27.225 18.049999" width="27.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,18.05)"> <g transform="translate(72,-57.56)"> <text transform="matrix(1,0,0,-1,-71.33,62.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-0.62" y="2.54"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6194768" y="2.54"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.782976" y="2.54"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="16.884199" y="2.54"> ）</GydF4y2Batspan> </text> </g> </g> </svg>在内导体（<S.vg height="12.5" id="M204" style="vertical-align:-3.2316pt;width:44.0625px;" version="1.1" viewbox="0 0 44.0625 12.5" width="44.0625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.5)"> <g transform="translate(72,-62)"> <text transform="matrix(1,0,0,-1,-71.95,65.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> <</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.604944" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.24,62.15)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>）在变型1-4中是相同的（图中的虚线曲线<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig4/" target="_blank">4.</一种>）。使用（<一种HR.E.f="#EEq5">3.1</一种>）计算价值<S.vg height="15.85" id="M205" style="vertical-align:-4.1381pt;width:40.799999px;" version="1.1" viewbox="0 0 40.799999 15.85" width="40.799999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.61 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-62.27,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.01,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-43.57,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>和价值观<S.vg height="15.85" id="M206" style="vertical-align:-4.1381pt;width:40.112499px;" version="1.1" viewbox="0 0 40.112499 15.85" width="40.112499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.61 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-62.27,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.01,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-44.13,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>在变体1-4中，我们很容易建立这种情况（<一种HR.E.f="#EEq6">3.2</一种>）可以但不需要履行。<GydF4y2Babr>在 [<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]，据称，但不能通过选择来证明<S.vg height="14.7125" id="M207" style="vertical-align:-3.2316pt;width:39.287498px;" version="1.1" viewbox="0 0 39.287498 14.7125" width="39.287498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.6,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.91,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>，电流密度可以在管状导体中确定，在这种情况下是外导体。换句话说，[<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]想说外导体中的电流密度是（<一种HR.E.f="#EEq3">2.3</一种>）并且如果我们在内圆柱导体中假设零电导率，则可以获得确定该解决方案所需的条件。首先，有必要指出这种情况<S.vg height="14.7125" id="M208" style="vertical-align:-3.2316pt;width:39.287498px;" version="1.1" viewbox="0 0 39.287498 14.7125" width="39.287498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.6,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.91,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>在任何时候都不需要，内部导体中必须具有零电流。通过解决这两者（<一种HR.E.f="#EEq3">2.3</一种>）和（<一种HR.E.f="#EEq16">3.12</一种>）。如果内导体中的电流是非零，则外导体受到内导体的影响，因此它不是涉及的外管状导体。如果内导体中的电流为零，则此信息不能提供条件（<一种HR.E.f="#EEq4">2.4</一种>）解决方案所必需的（<一种HR.E.f="#EEq3">2.3</一种>）在外导体中。示例的变体5和6<一种HR.E.f="#ex2">3.2</一种>可以补充上述考虑因素。在这两个变体中，<S.vg height="14.7125" id="M209" style="vertical-align:-3.2316pt;width:79.612503px;" version="1.1" viewbox="0 0 79.612503 14.7125" width="79.612503" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.98,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.455387" y="0"> ω.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="34.533287" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="40.884811" y="0"> m</GydF4y2Batspan> </text> </g> </g> </svg>被选中，实际上是一样的<S.vg height="14.7125" id="M210" style="vertical-align:-3.2316pt;width:39.287498px;" version="1.1" viewbox="0 0 39.287498 14.7125" width="39.287498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.6,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.91,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>。在变型5和6中，内导体中的电流密度是恒定的。在变型5中，与变型6不同，电流密度是非零。<GydF4y2Babr>选择完整系统的两个方程的无限可能性（<一种HR.E.f="#EEq16">3.12</一种>）在内导体和系统中（<一种HR.E.f="#EEq18">3.14</一种>）在外导体中。至于电流的选择<S.vg height="19.512501" id="M211" style="vertical-align:-7.3697pt;width:11.65px;" version="1.1" viewbox="0 0 11.65 19.512501" width="11.65" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.95,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 9.22,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>和<S.vg height="19.512501" id="M212" style="vertical-align:-7.3697pt;width:13.2625px;" version="1.1" viewbox="0 0 13.2625 19.512501" width="13.2625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.95,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 10.51,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>，有必要意识到这两个电流完全独立;每个导体连接到“其”电流源。不能假设两个导体（内部和外部）连接到一个电流源，因为复杂的阻抗<S.vg height="19.512501" id="M213" style="vertical-align:-7.3697pt;width:16.2125px;" version="1.1" viewbox="0 0 16.2125 19.512501" width="16.2125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.3,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 12.87,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>和<S.vg height="19.512501" id="M214" style="vertical-align:-7.3697pt;width:17.825001px;" version="1.1" viewbox="0 0 17.825001 19.512501" width="17.825001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-62.3,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 14.16,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>两个导体不能确定，因此不可能确定电流<S.vg height="19.512501" id="M215" style="vertical-align:-7.3697pt;width:11.65px;" version="1.1" viewbox="0 0 11.65 19.512501" width="11.65" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.95,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 9.22,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>和<S.vg height="19.512501" id="M216" style="vertical-align:-7.3697pt;width:13.2625px;" version="1.1" viewbox="0 0 13.2625 19.512501" width="13.2625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.95,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 10.51,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>这样它持有<S.P.一种Nclass="equation" id="EEq19"> <svg height="20.25" id="M217" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 20.25" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,20.25)"> <g transform="translate(72,-55.8)"> <text transform="matrix(1,0,0,-1,162.34,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,168.34,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 162.34,57.09 9.22,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,175.04,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ：</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.8523636" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,190.9,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 184.9,57.09 10.51,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,198.88,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,220.57,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 210.92,57.09 14.16,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,228.55,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ：</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.8523636" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,248.06,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 238.41,57.09 12.87,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,251.28,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="207.21001" y="2.4300001"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="211.3735" y="2.4300001"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="217.625" y="2.4300001"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="220.75075" y="2.4300001"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="227.00224" y="2.4300001"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="233.25375" y="2.4300001"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>相比赛<S.vg height="15.675" id="M218" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>和<S.vg height="15.4875" id="M219" style="vertical-align:-4.1381pt;width:12.225px;" version="1.1" viewbox="0 0 12.225 15.4875" width="12.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>通过关系连接（<一种HR.E.f="#EEq5">3.1</一种>）。在本文中，<S.vg height="15.675" id="M220" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>是首选的。在 [<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]，优选给定量<S.vg height="15.4875" id="M221" style="vertical-align:-4.1381pt;width:12.225px;" version="1.1" viewbox="0 0 12.225 15.4875" width="12.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>，满足条件（<一种HR.E.f="#EEq6">3.2</一种>）因此选择以下示例。</S.P.一种N></P.><D.一世v class="floats-partial-section partial-other-wrapper" data-section="tab1"> <div class="floats-partial-content fig-content-tab1"> <table class="table-group" id="tab1"> <tbody> <tr> <td> <table class="table"> <tbody> <tr> <td class="thead-hr" colspan="5"> <hr></td> </tr> <tr class="thead"> <td align="left">变体</GydF4y2Batd> <td align="center"> <svg height="18.012501" id="M222" style="vertical-align:-3.2316pt" version="1.1" viewbox="0 0 89.4375 18.012501" width="89.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,18.0125)"> <g transform="translate(72,-57.59)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,57.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.29,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.414999" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-41.62,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 8.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-28.67,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ω.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.077898" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.429422" y="0"> m</GydF4y2Batspan> </text> </g> </g> </svg>）</GydF4y2Batd> <td align="center"> <svg height="11.075" id="M223" style="vertical-align:-3.25793pt" version="1.1" viewbox="0 0 17.6 11.075" width="17.6" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.075)"> <g transform="translate(72,-63.14)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>（毫米）</GydF4y2Batd> <td align="center"> <svg height="11.05" id="M224" style="vertical-align:-3.2316pt" version="1.1" viewbox="0 0 17.575001 11.05" width="17.575001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.05)"> <g transform="translate(72,-63.16)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>（毫米）</GydF4y2Batd> <td align="center"> <svg height="18.012501" id="M225" style="vertical-align:-3.2316pt" version="1.1" viewbox="0 0 74.537498 18.012501" width="74.537498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,18.0125)"> <g transform="translate(72,-57.59)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,57.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-57,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.414999" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-40.33,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 8.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-25.3,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ω.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.3022318" y="0"> ⋅</GydF4y2Batspan> </text> </g> </g> </svg>m）</GydF4y2Batd> </tr> <tr> <td class="thead-hr" colspan="5"> <hr></td> </tr> <tr> <td align="left">1</GydF4y2Batd> <td align="center">2.65</GydF4y2Batd> <td align="center">10.</GydF4y2Batd> <td align="center">15.</GydF4y2Batd> <td align="center">2.65</GydF4y2Batd> </tr> <tr> <td align="left">2</GydF4y2Batd> <td align="center">2.65</GydF4y2Batd> <td align="center">10.</GydF4y2Batd> <td align="center">15.</GydF4y2Batd> <td align="center">1.678</GydF4y2Batd> </tr> <tr> <td align="left">3.</GydF4y2Batd> <td align="center">2.65</GydF4y2Batd> <td align="center">15.</GydF4y2Batd> <td align="center">20.</GydF4y2Batd> <td align="center">2.65</GydF4y2Batd> </tr> <tr> <td align="left">4.</GydF4y2Batd> <td align="center">2.65</GydF4y2Batd> <td align="center">15.</GydF4y2Batd> <td align="center">20.</GydF4y2Batd> <td align="center">1.678</GydF4y2Batd> </tr> <tr> <td align="left">5.</GydF4y2Batd> <td align="center"><span style="width: 21.85px;"> <svg height="14.2" id="M226" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 21.85 14.2" width="21.85" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.2)"> <g transform="translate(72,-60.64)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-59.45,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 8.</GydF4y2Batspan> </text> </g> </g> </svg></span></td> <td align="center">10.</GydF4y2Batd> <td align="center">15.</GydF4y2Batd> <td align="center">1.678</GydF4y2Batd> </tr> <tr> <td align="left">6.</GydF4y2Batd> <td align="center"><span style="width: 21.85px;"> <svg height="14.2" id="M227" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 21.85 14.2" width="21.85" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.2)"> <g transform="translate(72,-60.64)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-59.45,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 8.</GydF4y2Batspan> </text> </g> </g> </svg></span></td> <td align="center">10.</GydF4y2Batd> <td align="center">15.</GydF4y2Batd> <td align="center">1.678</GydF4y2Batd> </tr> <tr class="table-tr"> <td colspan="5"> <hr class="tbody-hr"></td> </tr> </tbody> </table></td> </tr> </tbody> </table> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">表格1</S.P.一种N><一种一种R.一世一种-label="full view" class="caption-partial-url" href="//www.newsama.com/journals/amp/2011/983678/tab1/" title="" target="_blank"></a> </div> </div> </div> <div class="floats-partial-section partial-carousel-wrapper" data-section="fig4"> <div class="floats-partial-content fig-content-fig4"> <div class="partial-carousel--single-image"> <img alt="" name="983678.fig.004" src="https://static-01.hindawi.com/articles/amp/volume-2011/983678/figures/983678.fig.004.jpg"> <br> <strong></strong> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图4.</S.P.一种N><一种一种R.一世一种-label="full view" class="caption-partial-url" href="//www.newsama.com/journals/amp/2011/983678/fig4/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <a href="#ex2">3.2</一种><一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/tab1/">1</一种><table> 实施例的解决方案GydF4y2Ba;变体1-6在表中指定;GydF4y2Ba内部导体中的部分导体的数量等于200。</GydF4y2Batable> </div> </div> </div> <p><span class="statement" id="ex3"><span class="statement-title"><i class="statement-title">例3.3。</一世></S.P.一种N>导体尺寸，频率<S.vg height="13.4875" id="M228" style="vertical-align:-2.34499pt;width:10.675px;" version="1.1" viewbox="0 0 10.675 13.4875" width="10.675" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.4875)"> <g transform="translate(72,-61.21)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>和电阻率值选择与示例的变体1,2和6相同<一种HR.E.f="#ex2">3.2</一种>。什么不同的量量值的规定值<S.vg height="15.675" id="M229" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>，选择该条件（<一种HR.E.f="#EEq6">3.2</一种>）满意。Phasor.<S.vg height="15.4875" id="M230" style="vertical-align:-4.1381pt;width:12.225px;" version="1.1" viewbox="0 0 12.225 15.4875" width="12.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>因此假设在该点处是连续的<S.vg height="11.075" id="M231" style="vertical-align:-3.25793pt;width:80.925003px;" version="1.1" viewbox="0 0 80.925003 11.075" width="80.925003" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.075)"> <g transform="translate(72,-63.14)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.604944" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.24,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-33.33,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-16.19,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>，规定的价值<S.vg height="15.4875" id="M232" style="vertical-align:-4.1381pt;width:12.225px;" version="1.1" viewbox="0 0 12.225 15.4875" width="12.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>是<S.vg height="14.375" id="M233" style="vertical-align:-0.3135pt;width:152.875px;" version="1.1" viewbox="0 0 152.875 14.375" width="152.875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.375)"> <g transform="translate(72,-60.5)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.3772497" y="0"> 6.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.62875" y="0"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="24.655916" y="0"> ×</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.433502" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="41.685001" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-24.01,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 8.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-11.05,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> V.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.790329" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.154356" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,16.83,65.87)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,31.87,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ∠</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,46.69,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∘</GydF4y2Batspan> </text> </g> </g> </svg>。<GydF4y2Babr>数字<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig5/" target="_blank">5.</一种>给出价值观<S.vg height="15.475" id="M234" style="vertical-align:-0.17555pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.475" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.475)"> <g transform="translate(72,-59.62)"> <text transform="matrix(1,0,0,-1,-71.33,62.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-0.62" y="2.54"> </GydF4y2Batspan> </text> </g> </g> </svg>实施例的解决方案<一种HR.E.f="#ex3">3.3</一种>在外导体中单独。在内部导体中，对于变体1和2，这些值是相同的，并且它们与示例中的变型1相同<一种HR.E.f="#ex2">3.2</一种>;见图<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig4/" target="_blank">4.</一种>。经过（<一种HR.E.f="#EEq5">3.1</一种>），在示例的变型1和2中<一种HR.E.f="#ex3">3.3</一种>那<S.vg height="19.299999" id="M235" style="vertical-align:-4.28859pt;width:137.96249px;" version="1.1" viewbox="0 0 137.96249 19.299999" width="137.96249" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.3)"> <g transform="translate(72,-56.56)"> <text transform="matrix(1,0,0,-1,-71.95,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.85 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,57.76)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-45,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6268301" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.667219" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.00672" y="0"> 一种</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="39.809551" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="46.161076" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,10.9,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,19.94,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ∠</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,34.76,66.06)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∘</GydF4y2Batspan> </text> </g> </g> </svg>持有，这在示例的变体中也是满足的<一种HR.E.f="#ex2">3.2</一种>。价值<S.vg height="15.475" id="M236" style="vertical-align:-0.17555pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.475" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.475)"> <g transform="translate(72,-59.62)"> <text transform="matrix(1,0,0,-1,-71.33,62.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-0.62" y="2.54"> </GydF4y2Batspan> </text> </g> </g> </svg>在变型6的内导体中，它们实际上是零，因为它们的范围是零<S.vg height="19.325001" id="M237" style="vertical-align:-4.28859pt;width:261.98749px;" version="1.1" viewbox="0 0 261.98749 19.325001" width="261.98749" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.325)"> <g transform="translate(72,-56.54)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.83 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,57.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-46.84,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6393328" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.667219" y="0"> 9.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.918718" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.04447" y="0"> 9.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.295967" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="41.54747" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="50.587139" y="0"> ×</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="61.364723" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="67.616226" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,27.03,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 9.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,39.98,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 一种</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.802832" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.154356" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,67.87,66.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,76.91,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ∠</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.680443" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.931942" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.183441" y="0"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="41.43494" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="44.560692" y="0"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="50.812191" y="0"> 7.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,133.98,65.87)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∘</GydF4y2Batspan> </text> </g> </g> </svg>到<S.vg height="19.325001" id="M238" style="vertical-align:-4.28859pt;width:211.47501px;" version="1.1" viewbox="0 0 211.47501 19.325001" width="211.47501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.325)"> <g transform="translate(72,-56.54)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.83 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,57.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-45,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6268301" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.667219" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.918718" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.04447" y="0"> 6.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.295967" y="0"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="41.54747" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="50.574635" y="0"> ×</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="61.364723" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="67.616226" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,28.87,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 8.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,41.82,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 一种</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.802832" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.154356" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,69.71,66.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,78.75,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ∠</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,93.57,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∘</GydF4y2Batspan> </text> </g> </g> </svg>。量量量计算的结果<S.vg height="15.675" id="M239" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>导致以下声明。让Phasor.<S.vg height="15.4875" id="M240" style="vertical-align:-4.1381pt;width:12.225px;" version="1.1" viewbox="0 0 12.225 15.4875" width="12.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>满足条件<S.P.一种Nclass="equation" id="EEq20"> <svg height="22.825001" id="M241" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 22.825001" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,22.825)"> <g transform="translate(72,-53.74)"> <text transform="matrix(1,0,0,-1,146.81,61.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 146.81,58.25 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,158.57,58.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.8499999" y="-2.51"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,169.52,58.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,178.96,58.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.3199997" y="-2.51"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.347885" y="-2.51"> </GydF4y2Batspan> </text> <g> <path d="m 200.32,58.25 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,212.08,58.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.8499999" y="-2.51"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,223.03,58.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,231.92,58.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.3199997" y="-2.51"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.347885" y="-2.51"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,262.21,58.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 253.28,55.02 13.54,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,266.82,61.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="191.67" y="1.39"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="195.8335" y="1.39"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="202.08499" y="1.39"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="205.21075" y="1.39"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="211.46225" y="1.39"> 6.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="217.71375" y="1.39"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>在哪里<S.vg height="19.512501" id="M242" style="vertical-align:-7.3697pt;width:17.049999px;" version="1.1" viewbox="0 0 17.049999 19.512501" width="17.049999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-63.02,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 13.54,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>是给定的非零复杂号码。如果<S.vg height="11.05" id="M243" style="vertical-align:-3.2316pt;width:13.6px;" version="1.1" viewbox="0 0 13.6 11.05" width="13.6" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.05)"> <g transform="translate(72,-63.16)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>是恒定的，然后是<S.vg height="11.15" id="M244" style="vertical-align:-3.2316pt;width:54.837502px;" version="1.1" viewbox="0 0 54.837502 11.15" width="54.837502" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.15)"> <g transform="translate(72,-63.08)"> <text transform="matrix(1,0,0,-1,-71.95,66.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,63.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-56.9,66.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> →</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="17.12911" y="0"> ∞</GydF4y2Batspan> </text> </g> </g> </svg>phasor.<S.vg height="15.675" id="M245" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>汇聚<S.P.一种Nclass="list"><span class="list-item"><span class="list-label">（1）</S.P.一种N><S.P.一种Nclass="list-content">在内导体到零，</S.P.一种N></S.P.一种N><span class="list-item"><span class="list-label">（2）</S.P.一种N><S.P.一种Nclass="list-content">在外导体中仅在给定的外管状导体（没有内导体）中计算的电流密度相位。<S.vg height="19.875" id="M246" style="vertical-align:-7.3697pt;width:76.425003px;" version="1.1" viewbox="0 0 76.425003 19.875" width="76.425003" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.875)"> <g transform="translate(72,-56.1)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.61 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-62.27,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.01,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-44.13,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6393328" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.667219" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-15.52,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -24.45,57.39 13.54,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>。</S.P.一种N></S.P.一种N></span><br>该陈述是[<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]作为计算量量的方法的本质<S.vg height="15.4875" id="M247" style="vertical-align:-4.1381pt;width:12.225px;" version="1.1" viewbox="0 0 12.225 15.4875" width="12.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 9.68,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>要么<S.vg height="15.675" id="M248" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>在管状导体中。但是，[<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]不正确，如讨论实施例的解决方案所示<一种HR.E.f="#ex2">3.2</一种>。此外，可以使用截面中描述的更简单的过程来确定管状导体中的电流密度<一种HR.E.f="#sec3.2">3.2</一种>。或在[<一种HR.E.f="#B6">8.</一种>]。<GydF4y2Babr>在该部分中解决的第二种情况是复合导体，其中内和外导体不相互绝缘。因此，<S.vg height="11.075" id="M249" style="vertical-align:-3.25793pt;width:55.162498px;" version="1.1" viewbox="0 0 55.162498 11.075" width="55.162498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.075)"> <g transform="translate(72,-63.14)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.94,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-36.8,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>保持和电路存在于由此形成的<S.vg height="7.1374998" id="M250" style="vertical-align:-0.10033pt;width:11.225px;" version="1.1" viewbox="0 0 11.225 7.1374998" width="11.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.1375)"> <g transform="translate(72,-66.29)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>近端导体，这是内导体的一部分，以及由此<S.vg height="13.45" id="M251" style="vertical-align:-2.21957pt;width:47.099998px;" version="1.1" viewbox="0 0 47.099998 13.45" width="47.099998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="15.816295" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="27.156515" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="33.408016" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>作为外导体的一部分，局部导体。类似于例子<一种HR.E.f="#ex3">3.3</一种>，我们将内部导体划分为<S.vg height="7.1374998" id="M252" style="vertical-align:-0.10033pt;width:11.225px;" version="1.1" viewbox="0 0 11.225 7.1374998" width="11.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.1375)"> <g transform="translate(72,-66.29)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>局部导体和外导体进入<S.vg height="7.1374998" id="M253" style="vertical-align:-0.10033pt;width:7.8874998px;" version="1.1" viewbox="0 0 7.8874998 7.1374998" width="7.8874998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.1375)"> <g transform="translate(72,-66.29)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>部分导体。在部分导体中，我们选择该点<S.vg height="14.7125" id="M254" style="vertical-align:-3.2316pt;width:126.0625px;" version="1.1" viewbox="0 0 126.0625 14.7125" width="126.0625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.76,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-61.52,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.540749" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="23.793209" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.821095" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="42.072594" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="47.286346" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="53.537846" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="58.751598" y="0"> ......</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="73.330093" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="78.543846" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。复合导体中的电流密度由系统的溶液确定<S.vg height="10.325" id="M255" style="vertical-align:-0.0pt;width:14.8375px;" version="1.1" viewbox="0 0 14.8375 10.325" width="14.8375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>相量的方程<S.vg height="19.875" id="M256" style="vertical-align:-7.3697pt;width:128.0125px;" version="1.1" viewbox="0 0 128.0125 19.875" width="128.0125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.875)"> <g transform="translate(72,-56.1)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.2,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.39 11.99,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-59.96,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.540749" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="23.793209" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.833599" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="42.085098" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="47.286346" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="53.537846" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="58.751598" y="0"> ......</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="73.342598" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="78.543846" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。首先<S.vg height="10.8125" id="M257" style="vertical-align:-0.10033pt;width:36.6875px;" version="1.1" viewbox="0 0 36.6875 10.8125" width="36.6875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.8125)"> <g transform="translate(72,-63.35)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.652796" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.993017" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>方程是内部导体电路的Kirchhoff的定律;这些是（<一种HR.E.f="#EEq16">3.12</一种>）。这<S.vg height="7.1374998" id="M258" style="vertical-align:-0.10033pt;width:11.225px;" version="1.1" viewbox="0 0 11.225 7.1374998" width="11.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.1375)"> <g transform="translate(72,-66.29)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>等式是Kirchhoff的公共电路定律：<S.P.一种Nclass="equation" id="EEq21"> <svg height="51.037498" id="M259" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 51.037498" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,51.0375)"> <g transform="translate(72,-31.17)"> <text transform="matrix(1,0,0,-1,121.91,47.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,128.19,44.49)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,132.7,47.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,139.45,44.49)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="6.2139201" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="12.20904" y="0"> 1</GydF4y2Batspan> </text> <g> <path d="m 132.7,41.24 23.83,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,159.31,47.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,176.93,44.49)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,180.15,47.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,186.9,44.49)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 180.15,41.53 13.46,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,196.39,47.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> j</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="14.816055" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,219.73,63.56)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="6.2139201" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="12.20904" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,219.94,41.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,220.3,33.79)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0674081" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="11.062528" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,236.31,47.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> φ.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,245.85,44.49)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="6.2139201" y="0"> ℓ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,257.63,47.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,264.38,44.49)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> </text> <g> <path d="m 257.63,41.51 12.32,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,273.42,47.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="185.07001" y="-0.83999997"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="189.23351" y="-0.83999997"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="195.485" y="-0.83999997"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="198.61075" y="-0.83999997"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="204.86224" y="-0.83999997"> 7.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="211.11375" y="-0.83999997"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>其他<S.vg height="10.8125" id="M260" style="vertical-align:-0.10033pt;width:33.362499px;" version="1.1" viewbox="0 0 33.362499 10.8125" width="33.362499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.8125)"> <g transform="translate(72,-63.35)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.9896574" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="20.329878" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>方程是外部导体电路的Kirchhoff的定律;这些是方程式<S.P.一种Nclass="equation" id="EEq22"> <svg height="50.787498" id="M261" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 50.787498" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,50.7875)"> <g transform="translate(72,-31.37)"> <text transform="matrix(1,0,0,-1,50.27,47.82)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,57.02,44.69)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="10.738704" y="0"> 1</GydF4y2Batspan> </text> <g> <path d="m 50.27,41.45 22.36,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,75.41,47.82)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,93.51,44.69)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 86.75,41.71 12,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,101.53,47.82)"> <tspan style="font-size: 12.50px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="11.327718" y="0"> j</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="14.803552" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="23.318094" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,131.21,44.69)"> <tspan style="font-size: 8.75px; " x="0" y="0"> O.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,140.04,63.76)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,136.09,41.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,136.44,33.99)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.0674081" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="11.062528" y="0"> 1</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,152.24,47.82)"> <tspan style="font-size: 12.50px; " x="0" y="0"> φ.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,161.78,44.69)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.7435842" y="0"> ℓ</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,172.09,47.82)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,178.84,44.69)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ℓ</GydF4y2Batspan> </text> <g> <path d="m 172.09,41.71 12.32,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,187.88,47.82)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="33.458027" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="43.697987" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="55.738373" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="67.391167" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="78.743896" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="84.995392" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="90.19664" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="101.86194" y="0"> +</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="113.20216" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="119.45366" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="124.65491" y="0"> ......</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="139.24591" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="144.45966" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="157.87538" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="169.21561" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="175.4671" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="270.60999" y="-0.74000001"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="274.7735" y="-0.74000001"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="281.02499" y="-0.74000001"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="284.15076" y="-0.74000001"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="290.40225" y="-0.74000001"> 8.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="296.65375" y="-0.74000001"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>其余的等式，<S.vg height="10.325" id="M262" style="vertical-align:-0.0pt;width:14.8375px;" version="1.1" viewbox="0 0 14.8375 10.325" width="14.8375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>等式，是某种电流密度值的处方<S.vg height="19.875" id="M263" style="vertical-align:-7.3697pt;width:99.112503px;" version="1.1" viewbox="0 0 99.112503 19.875" width="99.112503" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.875)"> <g transform="translate(72,-56.1)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.2,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.39 11.1,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-60.85,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="13.540749" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="23.268084" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="35.295967" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="44.273125" y="0"> ≤.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="56.313511" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>或者总电流量的处方<S.vg height="15.4875" id="M264" style="vertical-align:-4.1381pt;width:9.0375004px;" version="1.1" viewbox="0 0 9.0375004 15.4875" width="9.0375004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 7.13,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>在复合导体中。</S.P.一种N></P.><D.一世v class="floats-partial-section partial-carousel-wrapper" data-section="fig5"> <div class="floats-partial-content fig-content-fig5"> <div class="partial-carousel--single-image"> <img alt="" name="983678.fig.005" src="https://static-01.hindawi.com/articles/amp/volume-2011/983678/figures/983678.fig.005.jpg"> <br> <strong></strong> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图5.</S.P.一种N><一种一种R.一世一种-label="full view" class="caption-partial-url" href="//www.newsama.com/journals/amp/2011/983678/fig5/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <a href="#ex3">3.3</一种><table> 实施例的解决方案GydF4y2Ba在外导体中。在文本中指定变体1,2和6。内部导体中的部分导体的数量等于200。</GydF4y2Batable> </div> </div> </div> <p><span class="statement" id="ex4"><span class="statement-title"><i class="statement-title">例3.4。</一世></S.P.一种N>导体横截面由半径给出<S.vg height="14.75" id="M265" style="vertical-align:-3.25793pt;width:43.200001px;" version="1.1" viewbox="0 0 43.200001 14.75" width="43.200001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.75)"> <g transform="translate(72,-60.2)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-55.78,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 8.</GydF4y2Batspan> </text> </g> </g> </svg>毫米，<S.vg height="14.7125" id="M266" style="vertical-align:-3.2316pt;width:52.587502px;" version="1.1" viewbox="0 0 52.587502 14.7125" width="52.587502" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.52,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>mm，和<S.vg height="11.075" id="M267" style="vertical-align:-3.25793pt;width:55.162498px;" version="1.1" viewbox="0 0 55.162498 11.075" width="55.162498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.075)"> <g transform="translate(72,-63.14)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.94,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-36.8,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="4.0084162" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>持有;内导体是铝（<S.vg height="18.012501" id="M268" style="vertical-align:-3.2316pt;width:145.3125px;" version="1.1" viewbox="0 0 145.3125 18.012501" width="145.3125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,18.0125)"> <g transform="translate(72,-57.59)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,57.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-58.98,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.405136" y="0"> 6.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="27.656635" y="0"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="36.683804" y="0"> ×</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="47.473892" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="53.725391" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,1,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 8.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,16.04,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ω.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.065395" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.429422" y="0"> m</GydF4y2Batspan> </text> </g> </g> </svg>）。对于案件a，何时<S.vg height="14.7125" id="M269" style="vertical-align:-3.2316pt;width:45.5px;" version="1.1" viewbox="0 0 45.5 14.7125" width="45.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.94,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 9.</GydF4y2Batspan> </text> </g> </g> </svg>mm，外导体是铜（<S.vg height="18.012501" id="M270" style="vertical-align:-3.2316pt;width:154.7375px;" version="1.1" viewbox="0 0 154.7375 18.012501" width="154.7375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,18.0125)"> <g transform="translate(72,-57.59)"> <text transform="matrix(1,0,0,-1,-71.95,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,57.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-57.69,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.405136" y="0"> 6.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="27.656635" y="0"> 7.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="33.908134" y="0"> 8.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="42.935303" y="0"> ×</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="53.712887" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="59.96439" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,8.54,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 8.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,23.58,60.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ω.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.065395" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.429422" y="0"> m</GydF4y2Batspan> </text> </g> </g> </svg>），<S.vg height="13.6125" id="M271" style="vertical-align:-2.34499pt;width:47.724998px;" version="1.1" viewbox="0 0 47.724998 13.6125" width="47.724998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.6125)"> <g transform="translate(72,-61.11)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.402496" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.442884" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.694386" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="31.820135" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg> MHz; the prescribed value is<S.vg height="19.299999" id="M272" style="vertical-align:-4.28859pt;width:156.8125px;" version="1.1" viewbox="0 0 156.8125 19.299999" width="156.8125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.3)"> <g transform="translate(72,-56.56)"> <text transform="matrix(1,0,0,-1,-71.95,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.85 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-63.7,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-54.43,57.76)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 一世</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-52,57.76)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-45.29,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="7.6268301" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="19.667219" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.918718" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.04447" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="37.383968" y="0"> 一种</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="49.186802" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="55.538326" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,19.99,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 2</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,35.02,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ∠</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,49.84,66.06)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∘</GydF4y2Batspan> </text> </g> </g> </svg>。对于案例B，何时<S.vg height="14.7125" id="M273" style="vertical-align:-3.2316pt;width:53.3125px;" version="1.1" viewbox="0 0 53.3125 14.7125" width="53.3125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-66.85,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-53.94,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg>mm，外导体是铅（<S.vg height="17.862499" id="M274" style="vertical-align:-3.2316pt;width:144.3125px;" version="1.1" viewbox="0 0 144.3125 17.862499" width="144.3125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.8625)"> <g transform="translate(72,-57.71)"> <text transform="matrix(1,0,0,-1,-71.95,60.99)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,57.86)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-57.69,60.99)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="21.405136" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="27.656635" y="0"> 8.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="36.683804" y="0"> ×</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="47.461388" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="53.712887" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,2.29,66.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 7.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,15.24,60.99)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ω.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.077898" y="0"> ⋅</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.429422" y="0"> m</GydF4y2Batspan> </text> </g> </g> </svg>），<S.vg height="13.6125" id="M275" style="vertical-align:-2.34499pt;width:36px;" version="1.1" viewbox="0 0 36 13.6125" width="36" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.6125)"> <g transform="translate(72,-61.11)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.402496" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.442884" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg> MHz; the prescribed value is<S.vg height="15.85" id="M276" style="vertical-align:-4.1381pt;width:36.237499px;" version="1.1" viewbox="0 0 36.237499 15.85" width="36.237499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.61 7.13,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-61.35,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</GydF4y2Batspan> </text> </g> </g> </svg>一种<S.vg height="11.0375" id="M277" style="vertical-align:-0.17555pt;width:23.1px;" version="1.1" viewbox="0 0 23.1 11.0375" width="23.1" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0375)"> <g transform="translate(72,-63.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.39)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ∠</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-57.13,68.56)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∘</GydF4y2Batspan> </text> </g> </g> </svg>。<GydF4y2Babr>实施例的解决方案<一种HR.E.f="#ex4">3.4</一种>在图中给出<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig6/" target="_blank">6.</一种>和<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig7/" target="_blank">7.</一种>。数字<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig6/" target="_blank">6.</一种>给出幅度的依赖<S.vg height="15.475" id="M278" style="vertical-align:-0.17555pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.475" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.475)"> <g transform="translate(72,-59.62)"> <text transform="matrix(1,0,0,-1,-71.33,62.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-0.62" y="2.54"> </GydF4y2Batspan> </text> </g> </g> </svg>Phasor.<S.vg height="15.675" id="M279" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>在<S.vg height="7.0124998" id="M280" style="vertical-align:-0.0pt;width:6.5px;" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>虽然图<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig7/" target="_blank">7.</一种>给予依赖<S.vg height="16.0375" id="M281" style="vertical-align:-4.28859pt;width:71.612503px;" version="1.1" viewbox="0 0 71.612503 16.0375" width="71.612503" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="10.515023" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.555412" y="0"> 一种</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.106745" y="0"> R.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="32.270245" y="0"> G</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="40.609745" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="44.773243" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -27.17,60.46 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-18.92,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>在<S.vg height="7.0124998" id="M282" style="vertical-align:-0.0pt;width:6.5px;" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>。B案例B中的铅导体是不寻常的，仅选择强调不连续性<S.vg height="15.475" id="M283" style="vertical-align:-0.17555pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.475" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.475)"> <g transform="translate(72,-59.62)"> <text transform="matrix(1,0,0,-1,-71.33,62.36)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="-0.62" y="2.54"> </GydF4y2Batspan> </text> </g> </g> </svg>在内部和外导体的共同边框上。铅的电阻率在温度下<S.vg height="11.0375" id="M284" style="vertical-align:-0.17555pt;width:20.200001px;" version="1.1" viewbox="0 0 20.200001 11.0375" width="20.200001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0375)"> <g transform="translate(72,-63.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.39)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> 0.</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-59.45,68.56)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∘</GydF4y2Batspan> </text> </g> </g> </svg>c已从[<一种HR.E.f="#B11">13.</一种>]。图中曲线中的不连续性<一种HR.E.f="//www.newsama.com/journals/amp/2011/983678/fig7/" target="_blank">7.</一种>只是似乎是因为<S.vg height="16.0375" id="M285" style="vertical-align:-4.28859pt;width:43.412498px;" version="1.1" viewbox="0 0 43.412498 16.0375" width="43.412498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 一种</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.551332" y="0"> R.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.7148314" y="0"> G</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.041828" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.205328" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -49.74,60.46 8.26,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-41.48,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg>已经改编，使其其价值在于间隔<S.vg height="13.45" id="M286" style="vertical-align:-2.21957pt;width:74.637497px;" version="1.1" viewbox="0 0 74.637497 13.45" width="74.637497" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> -</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.728054" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.979553" y="0"> 8.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.231054" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="31.482553" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="36.683804" y="0"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="42.935303" y="0"> 8.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="49.186802" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="55.438301" y="0"> ]</GydF4y2Batspan> </text> </g> </g> </svg>。<GydF4y2Babr>让在其中内和外导体的复合导体中不相互绝缘电流量量值<S.vg height="15.4875" id="M287" style="vertical-align:-4.1381pt;width:9.0375004px;" version="1.1" viewbox="0 0 9.0375004 15.4875" width="9.0375004" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.4875)"> <g transform="translate(72,-59.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.9 7.13,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>被规定。量量计算结果<S.vg height="15.675" id="M288" style="vertical-align:-4.28859pt;width:10.4375px;" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>导致以下两个陈述。<S.P.一种Nclass="list"><span class="list-item"><span class="list-label">（1）</S.P.一种N><S.P.一种Nclass="list-content">如果<S.vg height="11.05" id="M289" style="vertical-align:-3.2316pt;width:12px;" version="1.1" viewbox="0 0 12 11.05" width="12" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.05)"> <g transform="translate(72,-63.16)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg>是恒定的，然后持有。<S.P.一种Nclass="equation" id="EEq23"> <svg height="26.362499" id="M290" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 26.362499" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,26.3625)"> <g transform="translate(72,-50.91)"> <text transform="matrix(1,0,0,-1,142.55,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> L.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.9516678" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,138.49,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,142.88,53.51)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,147.7,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> →</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="9.5659361" y="0"> ∞</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,165.37,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,171.37,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 165.37,57.09 9.22,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,178.07,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 190.1,60.31 7.13,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,197.23,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.931223" y="0"> L.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="29.407057" y="0"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="32.882889" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,219.11,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,223.5,53.51)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,228.32,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> →</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="9.5659361" y="0"> ∞</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,245.99,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,251.99,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 245.99,57.09 10.51,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,259.97,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="198.52" y="4.8699999"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="202.6835" y="4.8699999"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="208.935" y="4.8699999"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="212.06075" y="4.8699999"> 1</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="218.31226" y="4.8699999"> 9.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="224.56375" y="4.8699999"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>内部导体中的电流密度会收敛到仅在给定值的内导体（没有外导体）中计算的电流密度<S.vg height="19.512501" id="M291" style="vertical-align:-7.3697pt;width:39.950001px;" version="1.1" viewbox="0 0 39.950001 19.512501" width="39.950001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.95,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 9.22,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-59.26,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -47.22,60.9 7.13,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>。</S.P.一种N></S.P.一种N><span class="list-item"><span class="list-label">（2）</S.P.一种N><S.P.一种Nclass="list-content">如果<S.vg height="11.0375" id="M292" style="vertical-align:-3.22281pt;width:14.0625px;" version="1.1" viewbox="0 0 14.0625 11.0375" width="14.0625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0375)"> <g transform="translate(72,-63.17)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.67,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> O.</GydF4y2Batspan> </text> </g> </g> </svg>是恒定的，然后坚持</S.P.一种N></S.P.一种N></span><span class="equation" id="EEq24"> <svg height="26.362499" id="M293" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 26.362499" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,26.3625)"> <g transform="translate(72,-50.91)"> <text transform="matrix(1,0,0,-1,143.01,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> L.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="6.9516678" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,139.41,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,143.8,53.51)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,147.7,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> →</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="9.5659361" y="0"> ∞</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,165.37,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,171.37,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 165.37,57.09 10.51,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,179.35,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 191.39,60.31 7.13,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,198.52,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 那</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="25.468611" y="0"> L.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="28.944445" y="0"> 一世</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="32.42028" y="0"> m</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,220.4,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,224.79,53.51)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,228.69,55.7)"> <tspan style="font-size: 8.75px; " x="0" y="0"> →</GydF4y2Batspan> <tspan style="font-size: 8.75px; " x="9.5571842" y="0"> ∞</GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,246.36,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,252.36,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m 246.36,57.09 9.22,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,259.05,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="199.44" y="4.8699999"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="203.6035" y="4.8699999"> 3.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="209.855" y="4.8699999"> 。</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="212.98074" y="4.8699999"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="219.23225" y="4.8699999"> 0.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="225.48375" y="4.8699999"> ）</GydF4y2Batspan> </text> </g> </g> </svg></span>外导体中的电流密度会聚到仅在给定值的外导体（没有内导体）中计算的电流密度<S.vg height="19.512501" id="M294" style="vertical-align:-7.3697pt;width:41.5625px;" version="1.1" viewbox="0 0 41.5625 19.512501" width="41.5625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.5125)"> <g transform="translate(72,-56.39)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <text transform="matrix(1,0,0,-1,-65.95,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,57.68 10.51,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-57.97,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -45.93,60.9 7.13,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg>。</S.P.一种N></P.><D.一世v class="floats-partial-section partial-carousel-wrapper" data-section="fig6"> <div class="floats-partial-content fig-content-fig6"> <div class="partial-carousel--single-image"> <img alt="" name="983678.fig.006" src="https://static-01.hindawi.com/articles/amp/volume-2011/983678/figures/983678.fig.006.jpg"> <br> <strong></strong> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图6.</S.P.一种N><一种一种R.一世一种-label="full view" class="caption-partial-url" href="//www.newsama.com/journals/amp/2011/983678/fig6/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <svg height="15.675" id="M295" style="vertical-align:-4.28859pt" version="1.1" viewbox="0 0 10.4375 15.675" width="10.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.675)"> <g transform="translate(72,-59.46)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -71.95,60.75 8.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> </g> </g> </svg> <svg height="7.0124998" id="M296" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg> <a href="#ex4">3.4</一种><S.vg height="11.1" id="M297" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 56.262501 11.1" width="56.262501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.1)"> <g transform="translate(72,-63.12)"> <text transform="matrix(1,0,0,-1,-71.95,63.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="14.103384" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="26.143772" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="32.395271" y="0"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="38.646774" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg> <table> 相移幅度的依赖性GydF4y2Ba在GydF4y2Ba在示例的A和B的情况下GydF4y2Ba;部分导体数量GydF4y2Ba。</GydF4y2Batable> </div> </div> </div> <div class="floats-partial-section partial-carousel-wrapper" data-section="fig7"> <div class="floats-partial-content fig-content-fig7"> <div class="partial-carousel--single-image"> <img alt="" name="983678.fig.007" src="https://static-01.hindawi.com/articles/amp/volume-2011/983678/figures/983678.fig.007.jpg"> <br> <strong></strong> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图7.</S.P.一种N><一种一种R.一世一种-label="full view" class="caption-partial-url" href="//www.newsama.com/journals/amp/2011/983678/fig7/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <svg height="16.0375" id="M298" style="vertical-align:-4.28859pt" version="1.1" viewbox="0 0 43.412498 16.0375" width="43.412498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.0375)"> <g transform="translate(72,-59.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 一种</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="5.551332" y="0"> R.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="9.7148314" y="0"> G</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="18.041828" y="0"> （</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="22.205328" y="0"> </GydF4y2Batspan> </text> <g> <path d="m -49.74,60.46 8.26,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-41.48,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ）</GydF4y2Batspan> </text> </g> </g> </svg> <svg height="7.0124998" id="M299" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.0125)"> <g transform="translate(72,-66.39)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> </text> </g> </g> </svg> <a href="#ex4">3.4</一种><S.vg height="11.1" id="M300" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 56.262501 11.1" width="56.262501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.1)"> <g transform="translate(72,-63.12)"> <text transform="matrix(1,0,0,-1,-71.95,63.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="14.103384" y="0"> =</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="26.143772" y="0"> 2</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="32.395271" y="0"> 5.</GydF4y2Batspan> <tspan style="font-size: 12.50px; " x="38.646774" y="0"> 0.</GydF4y2Batspan> </text> </g> </g> </svg> <table> 依赖GydF4y2Ba在GydF4y2Ba在示例的（虚线）和b的情况下GydF4y2Ba;部分导体数量GydF4y2Ba。</GydF4y2Batable> </div> </div> </div> <h4 id="conclusion">4。结论</H4.><P.>圆柱形导体中电流密度的计算[<一种HR.E.f="#B1">1</一种>提供正弦电流的是一种教科书示例，导致术语皮肤效应和圆柱导体电感的引入。在 [<一种HR.E.f="#B2a">2</一种>-<一种HR.E.f="#B2c">4.</一种>]Simonyi概述了一种计算复合导体中电场强度的量相的方法。复合导体由一个圆柱形导体和一个管状导体组成;导体之间没有绝缘。然而，Simonyi没有通过他提出的方法进行任何所得公式，他没有给出任何具体实例的解决方案。在本文中，分析了Simonyi的方法，并引起了他方法的基本缺点。</P.><P.>主要注意力致力于计算由不同电阻率的管状导体构成的管状导体中的电流密度的方法。描述了由两个管状导体构成的复合导体的情况描述的计算方法，但是该方法可以容易地推广用于更多导体。在计算中，假设复合导体的横截面中的电流密度相量由部分是恒定的，并且是线性方程系统的溶液。将一般计算方法应用于四个实例的解决方案中，每个实施例具有多个变体。这些例子包括几种情况。在第一情况下，导体不是复合导体，而是单个管状导体。在其余情况下，导体由两个管状导体组成，在那里有两个管状导体<S.P.一种Nclass="list"><span class="list-item"><span class="list-label">（一世）</S.P.一种N><S.P.一种Nclass="list-content">零厚度的绝缘，</S.P.一种N></S.P.一种N><span class="list-item"><span class="list-label">（ii）</S.P.一种N><S.P.一种Nclass="list-content">非零厚度的绝缘，</S.P.一种N></S.P.一种N><span class="list-item"><span class="list-label">（iii）</S.P.一种N><S.P.一种Nclass="list-content">没有绝缘。</S.P.一种N></S.P.一种N></span></p> <p>在导体之间非零厚度绝缘的情况下，值得注意的是，皮肤效果，即，在朝向导体表面的方向上的电流密度的增加，在复合导体的每个导体中单独地表现出自身。</P.><H4.一世D.=“一种cknowledgment">承认</H4.><P.>本文含有捷克共和国教育部，青年和体育部的研究计划的解决方案结果。</P.></D.一世v> <div class="xml-content"> <h4 class="references" id="references">参考</H4.><O.L.><L.一世一世D.="B1">J. C. Maxwell，<一世>关于电力和磁力的论文</一世>，卷。2，多佛出版物，纽约，纽约，美国，第3版，1954年。<S.P.一种Nclass="reflinks"></span></li> <li id="B2a">K. Simonyi，<一世>电气工程基础</一世>，第3部分，VEB，柏林，德国，1956年。<S.P.一种Nclass="reflinks"></span></li> <li id="B2b">K. Simonyi，<一世>电气工程基础</一世>，第3部分，Pergamon，牛津，英国，1963年。<S.P.一种Nclass="reflinks"></span></li> <li id="B2c">K. Simonyi，<一世>电气工程基础</一世>，第3部分，MIR出版商，莫斯科，俄罗斯，1964年。<S.P.一种Nclass="reflinks"></span></li> <li id="B3">J. R.Reitz，F. J. Milford和R. W. Christy，<一世>电磁理论的基础</一世>，第13章，Addison-Wesley，纽约，纽约，美国，1993年。<S.P.一种Nclass="reflinks"></span></li> <li id="B4">J.Hlávka，埃德。，<一世>电气工程我，物理基础</一世>，sntl，布拉格，捷克共和国，1968年。<S.P.一种Nclass="reflinks"></span></li> <li id="B5">E. N. Miranda，“了解皮肤效果的简单模型”<一世>国际电气工程教育杂志</一世>，卷。36，pp。31-36,1999。<S.P.一种Nclass="reflinks">查看在：<一种HR.E.f="https://scholar.google.com/scholar_lookup?title=A%20simple%20model%20for%20understanding%20the%20skin%20effect&author=E. N. Miranda&publication_year=1999" target="_blank">谷歌学术</一种></S.P.一种N></L.i> <li id="B6">O. Coufal，“长期管状导体的电流密度”，<一世>物理学杂志。一种</一世>，卷。41，没有。14，物品ID 145401,2008。<S.P.一种Nclass="reflinks">查看在：<一种HR.E.f="https://doi.org/10.1088/1751-8113/41/14/145401">出版商网站</一种><S.P.一种Nclass="sep">|</S.P.一种N><一种HR.E.f="https://scholar.google.com/scholar_lookup?title=Current%20density%20in%20a%20long%20solitary%20tubular%20conductor&author=O. Coufal&publication_year=2008" target="_blank">谷歌学术</一种><S.P.一种Nclass="sep">|</S.P.一种N><一种HR.E.f="https://www.zentralblatt-math.org/zmath/en/advanced/?q=an%3A1137.78302">Zentralblatt Math.</一种></S.P.一种N></L.i> <li id="B7">K. Rektorys和E.Vitásek，Eds。，<一世>适用数学的调查</一世>，卷。1和2的<一世>数学及其应用</一世>，Kluwer学术出版商，Dordrecht，荷兰，第二版，1994年。<S.P.一种Nclass="reflinks"></span></li> <li id="B8">E. Kamke，<一世>常微分方程</一世>，第6章，Nauka，莫斯科，俄罗斯，1965年。<S.P.一种Nclass="reflinks"></span></li> <li id="B9">E. hairer，S.P.Nørsett和G. Wanner，<一世>求解常微分方程I</一世>，Springer，柏林，德国，第二版，1993年。<S.P.一种Nclass="reflinks"></span></li> <li id="B10">O. D. Kellog，<一世>潜在理论的基础</一世>，第6章，多佛，纽约，纽约，美国，1954年。<S.P.一种Nclass="reflinks"></span></li> <li id="B11">D. R. Lide，<一世>化学和物理手册</一世>，CRC印刷机，Boca Raton，Fla，美国，第88版，2008。<S.P.一种Nclass="reflinks"></span></li> </ol> </div> <div class="xml-content"> <h4 class="copyright" id="copyright">版权</H4.><P.>版权所有©2011OldřichCoufal。这是分布下的开放式访问文章<一种R.E.L.=“L.一世cense" href="http://creativecommons.org/licenses/by/3.0/">创意公共归因许可证</一种>如果正确引用了原始工作，则允许在任何媒体中的不受限制使用，分发和再现。</P.></D.一世v> </div> </article> </div> </div> </div> <div class="biblio__Wrapper-sc-1nou1lz-0 eyHfWh journal_article__BiblioIntegratorWidget-sc-12fk6zy-5 dbAANp article_widget biblioWrapper hide"> <hr> <h4 class="biblio__H4-sc-1nou1lz-2 kgAKHb hrTitleRef">更多相关文章</H4.><D.一世v id="biblio_widget" class="biblio__BiblioWrapper-sc-1nou1lz-1 bmtApD"></div> </div> </div> </div> <div class="threeColumn__RightWrapper-sc-1bf4078-2 jzTMLK rightWrapper" id="rightSectionMenu"> <div> <div class="journal_article__ArticleStickyTopToolbar-sc-12fk6zy-0 gbrQxi article_sticky_top_toolbar"> <div class="sc-gVLVqr innUZH article_top_toolbar"> <a class="sc-htpNat bUhGXt link 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height="24"><span class="text">引文</S.P.一种N></S.P.一种N><span class="sc-htoDjs bqeMOy sc-dqBHgY cQgXqt fileArrow icon-colored _3P4iUn1NDM5G77nWCamJ4l icon-themeable" title="" font-size="20"></span></a> </div> </div> <div class="journal_article__ArticleStickyBottomToolbar-sc-12fk6zy-1 isgRZA article_sticky_bottom_toolbar"> <div class="sc-cHSUfg kdoIIa article_bottom_toolbar"> <div class="sc-cTjmhe begQDP accordion" property="background-color" color="#D8D8D8" id="toolbar__dofNav"> <span><img alt="" class="sc-EHOje jOLhQl sc-eAKXzc bESoPs" title="" role="presentation" src="data:image/svg+xml;base64,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" height="24"><span class="sc-gbOuXE SDMqt">下载其他格式</S.P.一种N><S.P.一种Nclass="sc-dRFtgE jooXYL">更多的</S.P.一种N></S.P.一种N> <span class="sc-htoDjs bMdQcY sc-bfYoXt VdeWO icon-colored _1CwL9R82TPl2HxDleeYGDR icon-themeable" title="" font-size="11"></span> </div> <div class="sc-cugefK dCMfhd"> <a class="sc-htpNat bUhGXt link sc-fnwBNb kfscSt open_panel" href="//www.newsama.com/downloads/journals/amp/2011/983678.epub" aria-label="ePub" property="background-color" color="#D8D8D8"> <div class="sc-iNhVCk brvugV"> epub.</D.。一世v><img alt="" class="sc-EHOje jOLhQl sc-eAKXzc bESoPs" title="" role="presentation" src="data:image/svg+xml;base64,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" height="24"></a> <a class="sc-htpNat bUhGXt link sc-fnwBNb kfscSt open_panel" href="//www.newsama.com/downloads/journals/amp/2011/983678.xml" aria-label="XML" property="background-color" color="#D8D8D8"> <div class="sc-iNhVCk brvugV"> XML.</D.。一世v><img alt="" class="sc-EHOje jOLhQl sc-eAKXzc bESoPs" title="" role="presentation" src="data:image/svg+xml;base64,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" 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src="data:image/svg+xml;base64,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" height="24"><span class="sc-gbOuXE SDMqt">订单印刷副本</S.P.一种N><S.P.一种Nclass="sc-dRFtgE jooXYL">命令</S.P.一种N></S.P.一种N><span class="sc-htoDjs kNoiZu sc-bfYoXt VdeWO right__icon icon-colored _32KP5uexH-Bgs7Kj8Gk1Tz icon-themeable" title="" font-size="16"></span></a> <div class="sc-cqpYsc krPIEq"> <div class="sc-hBbWxd hdkxPJ"> <div> 意见<S.P.一种N>1261.。</GydF4y2BaS.P.一种N></D.一世v> <div> 下载<S.P.一种N>742.。</GydF4y2BaS.P.一种N></D.一世v> </div> <div> <div class="sc-dyGzUR cmbuIE"> <span class="__dimensions_badge_embed__" data-doi="10.1155/2011/983678" data-style="small_circle"></span>引用</D.。一世v> </div> </div> <nav class="sc-bRBYWo fXBKFa sc-gkFcWv gXvjfo" id="toolbar__iconNav"> <h3 class="sc-Rmtcm hNPrIr">分享帖子</H3.><ul class="sc-hzDkRC bnbfTS"> <li class="iconBorder"><a class="sc-htpNat bUhGXt link" href="https://twitter.com/share?url=https://doi.org/10.1155/2011/983678&via=Hindawi" aria-label="Sharing on Twitter" rel="noopener noreferrer" target="_blank"><img alt="" class="sc-EHOje jOLhQl socialTwitter" 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