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</span>本讲从电磁感应现象出发，讲述电动势的产生原理，进一步扩展到直流和交流发电机，三相交流发电机和三相四线动力电力系统；接着介绍电磁感应的涡流效应在加热、阻尼、驱动和电动上的应用，列举了生活中的电磁炉和微波 ...</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><span id="swf_GAs"></span><script type="text/javascript" reload="1">$('swf_GAs').innerHTML=AC_FL_RunContent('width', '520', 'height', '390', 'allowNetworking', 'internal', 'allowScriptAccess', 'never', 'src', encodeURI('http://swf.ws.126.net/openplayer/v02/-0-2_M93PID6K3_M96RMPNTE-vimg1_ws_126_net//image/snapshot_movie/2013/9/H/7/M96RMPLH7-1421720937445.swf'), 'quality', 'high', 'bgcolor', '#ffffff', 'wmode', 'transparent', 'allowfullscreen', 'true');</script><div><br></div><div>本讲从电磁感应现象出发，讲述电动势的产生原理，进一步扩展到直流和交流发电机，三相交流发电机和三相四线动力电力系统；接着介绍电磁感应的涡流效应在加热、阻尼、驱动和电动上的应用，列举了生活中的电磁炉和微波炉的工作原理，电磁互感的应用；最后介绍了电磁波的形成，天线结构和工作原理，与实际天线结合阐述了天线的应用。</div></td></tr></table> <!--[diy=diycontentbottom]--><div id="diycontentbottom" class="area"></div><!--[/diy]--> <script src="data/cache/home.js?eOg" type="text/javascript"></script> <div id="click_div"><table cellpadding="0" cellspacing="0" class="atd"> <tr><td> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=click&op=add&clickid=1&idtype=aid&id=3464&hash=aac37af5c26c79a019b611dceec82960&handlekey=clickhandle" id="click_aid_3464_1" onclick="showWindow(this.id, this.href);doane(event);"> <img src="static/image/click/jidan.gif" alt="" /><br />鸡蛋</a> </td> <td> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=click&op=add&clickid=2&idtype=aid&id=3464&hash=aac37af5c26c79a019b611dceec82960&handlekey=clickhandle" id="click_aid_3464_2" onclick="showWindow(this.id, this.href);doane(event);"> 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class="bm_c"> <p class="ptm pbm"><a href="http://www.oecr.com/portal.php?mod=comment&id=3464&idtype=aid" class="xi2">查看全部评论(<em id="_commentnum">5</em>)</a></p><form id="cform" name="cform" action="portal.php?mod=portalcp&ac=comment" method="post" autocomplete="off"> <div class="tedt"> <div class="area"> <textarea name="message" rows="3" class="pt" id="message" onkeydown="ctrlEnter(event, 'commentsubmit_btn');"></textarea> </div> </div> <div class="mtm"><span id="secqaa_qSddgm2H"></span> <script type="text/javascript" reload="1">updatesecqaa('qSddgm2H', '<sec> <span id="sec<hash>" onclick="showMenu(this.id);"><sec></span><div id="sec<hash>_menu" class="p_pop p_opt" style="display:none"><sec></div>', 'portal::view');</script> <span id="seccode_cSddgm2H"></span> <script type="text/javascript" reload="1">updateseccode('cSddgm2H', '<sec> <span id="sec<hash>" onclick="showMenu(this.id);"><sec></span><div id="sec<hash>_menu" class="p_pop p_opt" style="display:none"><sec></div>', 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13:49</span> </dt> <dd>很久不来了，变化挺大啊。</dd> </dl><a name="comment_anchor_1468"></a> <dl id="comment_1468_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(1468, '3464');">引用</a> </span> <a href="http://club.oecr.com/space-uid-47150.html" class="xi2 xw1" c="1">xika0037</a> <span class="xg1 xw0">2015-7-31 07:46</span> </dt> <dd>不要感叹时间总是流逝得太快，一辈子本来就不长。</dd> </dl><a name="comment_anchor_1428"></a> <dl id="comment_1428_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(1428, '3464');">引用</a> </span> <a href="http://club.oecr.com/space-uid-55481.html" class="xi2 xw1" c="1">xianghurena</a> <span class="xg1 xw0">2015-7-30 11:45</span> </dt> <dd>界面不错啊。</dd> </dl><a name="comment_anchor_1409"></a> <dl id="comment_1409_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(1409, '3464');">引用</a> </span> <a href="http://club.oecr.com/space-uid-73529.html" class="xi2 xw1" c="1">成兮</a> <span class="xg1 xw0">2015-7-30 02:15</span> </dt> <dd>佩服佩服！</dd> </dl><a name="comment_anchor_1294"></a> <dl id="comment_1294_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(1294, '3464');">引用</a> </span> <a href="http://club.oecr.com/space-uid-87412.html" class="xi2 xw1" c="1">haibo88521</a> <span class="xg1 xw0">2015-7-27 16:42</span> </dt> <dd>不要感叹时间总是流逝得太快，一辈子本来就不长。</dd> </dl></div> </div> <!--[diy=diycontentcomment]--><div id="diycontentcomment" class="area"></div><!--[/diy]--> </div> <div class="sd pph"> <div class="drag"> <!--[diy=diyrighttop]--><div id="diyrighttop" class="area"><div id="frameRe1gON" class="cl_frame_bm frame move-span cl frame-1"><div class="frame-title title"><span class="titletext">推荐学习内容</span></div><div id="frameRe1gON_left" class="column frame-1-c"><div 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