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 <title><![CDATA[关于有功和无功]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1414903.html]]></link>
 <description><![CDATA[Latest 50 replies of 关于有功和无功]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
 <generator><![CDATA[www.ymmfa.com]]></generator>
 <lastBuildDate><![CDATA[Wed, 29 Apr 2026 09:58:54 +0000]]></lastBuildDate>
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 <title><![CDATA[工控人家园]]></title>
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 <description><![CDATA[工控人家园]]></description>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[2楼说法很精彩。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1414903#1382974.html]]></link>
 <author><![CDATA[hahahaha]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 27 Nov 2012 10:09:23 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[二楼厉害]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1414903#1382754.html]]></link>
 <author><![CDATA[sjq1976]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 27 Nov 2012 02:19:01 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[功率的一种定义，就是实际功率和试载功率、一般为百分之九十，应该是这样，，，，基础知识了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1414903#1382221.html]]></link>
 <author><![CDATA[爱不离]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 25 Nov 2012 12:55:44 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[非常形象。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1414903#1382218.html]]></link>
 <author><![CDATA[lljwtt]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 25 Nov 2012 12:38:44 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[交流电路中,纯电感和纯电容消耗的就是无功,它们是反向的.
纯电阻消耗的就是有功]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1414903#1381901.html]]></link>
 <author><![CDATA[sanlihu]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 24 Nov 2012 12:03:04 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[除了有功就是无功]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1414903#1381872.html]]></link>
 <author><![CDATA[739797334]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 24 Nov 2012 10:46:03 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[自古二楼出真相啊]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1414903#1381844.html]]></link>
 <author><![CDATA[工控—魔术师]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 24 Nov 2012 09:28:47 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[2楼你哄小孩子入睡肯定很厉害 [s:49]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1414903#1381806.html]]></link>
 <author><![CDATA[许可]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 24 Nov 2012 07:55:41 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[呵呵，很形象啊！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1414903#1381641.html]]></link>
 <author><![CDATA[杨宁辉]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 24 Nov 2012 00:57:37 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:26] 我举个例子：比如 你推一块木头用了100斤的力，但是没有把木头推动，那你就是在做无用功；如果你用200斤的力把木头推动了，那你就在做有用功 [s:26]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1414903#1381624.html]]></link>
 <author><![CDATA[小小一电工]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 24 Nov 2012 00:31:09 +0000]]></pubdate>
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