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 <title><![CDATA[波峰焊电源为3P 5W&nbsp;&nbsp;380V 50HZ ..]]></title>
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 <description><![CDATA[Latest 50 replies of 波峰焊电源为3P 5W&nbsp;&nbsp;380V 50HZ ..]]></description>
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 <description><![CDATA[在电力系统中叫TN-S系统]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1064166.html]]></link>
 <author><![CDATA[liuhuaxing]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 08 Jun 2011 10:45:58 +0000]]></pubdate>
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 <description><![CDATA[[s:21]5W就是五线即三相火线(R.S.T)，一根工作零线(N),一根保护零线（PEN）]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1064156.html]]></link>
 <author><![CDATA[gaorenyisi]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 08 Jun 2011 10:22:55 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[不要把N曏和地線混樂]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1064149.html]]></link>
 <author><![CDATA[q4577411]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 08 Jun 2011 09:57:29 +0000]]></pubdate>
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 <description><![CDATA[就是三相五险制，现在的标准系统
3L+1N+1PE]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1055838.html]]></link>
 <author><![CDATA[zttchenjun]]></author>
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 <pubdate><![CDATA[Sun, 29 May 2011 14:40:45 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[清楚了,谢谢大家的帮忙]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1055201.html]]></link>
 <author><![CDATA[zhuzhutu]]></author>
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 <pubdate><![CDATA[Sun, 29 May 2011 03:55:41 +0000]]></pubdate>
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 <description><![CDATA[学习了,才知道还有5线制~汗颜...]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1053872.html]]></link>
 <author><![CDATA[ttkea]]></author>
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 <pubdate><![CDATA[Fri, 27 May 2011 13:34:05 +0000]]></pubdate>
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 <description><![CDATA[支持1楼]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1053513.html]]></link>
 <author><![CDATA[714675398]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 27 May 2011 05:48:40 +0000]]></pubdate>
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<item>
 <title><![CDATA[Re:波峰焊电源为3P 5W&#160;&#160;380V 50HZ&#160;&#160;,5W是指什么]]></title>
 <description><![CDATA[五线制]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1052508.html]]></link>
 <author><![CDATA[caifangchun]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 26 May 2011 04:12:49 +0000]]></pubdate>
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 <description><![CDATA[1楼老大正解，不过在中国的供电系统里变压器房里的零线和地线是接在一起的（变压器零线接地）]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1052254.html]]></link>
 <author><![CDATA[铭杰工控]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 25 May 2011 23:37:36 +0000]]></pubdate>
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 <description><![CDATA[[quote]引用第2楼zhangli019于2011-05-25 20:09发表的&nbsp;&nbsp;:
[s:28]楼上的，五线？是三相线、一中性线、一地线吗？
[/quote]
是的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1052236.html]]></link>
 <author><![CDATA[hxl202319]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 25 May 2011 22:15:58 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[50HZ&nbsp;&nbsp; 频率&nbsp;&nbsp;]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1052007.html]]></link>
 <author><![CDATA[路在何方]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 25 May 2011 12:46:35 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:28]楼上的，五线？是三相线、一中性线、一地线吗？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1051960.html]]></link>
 <author><![CDATA[zhangli019]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 25 May 2011 12:09:25 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[翻译成中文就是三相五线380伏50赫兹]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-106601#1051831.html]]></link>
 <author><![CDATA[hxl202319]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 25 May 2011 09:42:08 +0000]]></pubdate>
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