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 <title><![CDATA[求教：西门子1200中几种上升沿下降沿的区别]]></title>
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 <description><![CDATA[Latest 50 replies of 求教：西门子1200中几种上升沿下降沿的区别]]></description>
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 <description><![CDATA[相比200/300的用法，感觉现在的1200/1500的 P N很不方便啊&nbsp;&nbsp;都需要定义操作数]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1637152#1935347.html]]></link>
 <author><![CDATA[tianfengzzh]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Fri, 17 Nov 2017 11:32:39 +0000]]></pubdate>
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