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 <title><![CDATA[什么是plc的主控单元和位控单元？]]></title>
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 <description><![CDATA[Latest 50 replies of 什么是plc的主控单元和位控单元？]]></description>
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 <description><![CDATA[求指导。。。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-107867#1062217.html]]></link>
 <author><![CDATA[zhangyangl13]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sun, 05 Jun 2011 15:20:05 +0000]]></pubdate>
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 <description><![CDATA[小弟初次接触，不是很懂，各位大侠帮忙解释下~~ 谢谢了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-107867#1061270.html]]></link>
 <author><![CDATA[zhangyangl13]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 04 Jun 2011 10:13:16 +0000]]></pubdate>
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