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 <title><![CDATA[请问梯形图里三条竖线符号表示什么？]]></title>
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 <description><![CDATA[谢谢、学习了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-30673#1061855.html]]></link>
 <author><![CDATA[老龚]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Sun, 05 Jun 2011 06:58:25 +0000]]></pubdate>
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 <description><![CDATA[分享，谢谢]]></description>
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 <author><![CDATA[hujinhua789]]></author>
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 <pubdate><![CDATA[Sat, 09 Oct 2010 08:51:11 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[上升沿脉冲]]></description>
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 <author><![CDATA[afdwxf]]></author>
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 <pubdate><![CDATA[Fri, 08 Oct 2010 07:55:07 +0000]]></pubdate>
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 <description><![CDATA[脉冲前沿触发与脉冲后延发]]></description>
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 <author><![CDATA[ztre]]></author>
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 <pubdate><![CDATA[Fri, 08 Oct 2010 04:23:01 +0000]]></pubdate>
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 <description><![CDATA[谢谢，学习了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-30673#879016.html]]></link>
 <author><![CDATA[swchang1108]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Thu, 07 Oct 2010 07:44:36 +0000]]></pubdate>
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 <description><![CDATA[脉冲前沿触发与脉冲后延发！]]></description>
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 <author><![CDATA[张玉文]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Sat, 06 Feb 2010 14:23:00 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[quote]引用第1楼guochunyi于2009-02-17 10:57发表的&nbsp;&nbsp;:
是上升/下降沿脉冲微分指令。
 [attachment=19226][/quote]

知道了，谢谢！~]]></description>
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 <author><![CDATA[rooogg]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Tue, 17 Feb 2009 03:06:51 +0000]]></pubdate>
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 <link><![CDATA[http://www.ymmfa.com/read-gktid-30673#434977.html]]></link>
 <author><![CDATA[guochunyi]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Tue, 17 Feb 2009 03:02:52 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[是上升/下降沿脉冲微分指令。
 [attachment=19226]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-30673#434969.html]]></link>
 <author><![CDATA[guochunyi]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Tue, 17 Feb 2009 02:57:21 +0000]]></pubdate>
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