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 <title><![CDATA[电气符号]]></title>
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 <description><![CDATA[Latest 50 replies of 电气符号]]></description>
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 <description><![CDATA[学习了 [s:21]&nbsp;&nbsp;[s:21]&nbsp;&nbsp;[s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-19785#291103.html]]></link>
 <author><![CDATA[boyun2183]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 21 Aug 2008 08:36:53 +0000]]></pubdate>
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 <description><![CDATA[我记得三菱PLC 80年代的教程上有此常开符号！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-19785#290937.html]]></link>
 <author><![CDATA[wdbrg]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 21 Aug 2008 05:00:43 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我记得很早的三菱F1PLC系列上有这种符号,日本进口的老数控机床(如FANUC）资料上也有,我们学习和维修时把它理解为一个常开信号]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-19785#290930.html]]></link>
 <author><![CDATA[021-39977024]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 21 Aug 2008 04:51:00 +0000]]></pubdate>
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