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 <title><![CDATA[请教各位一个问题]]></title>
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 <description><![CDATA[请问一下你有s7-300的变量功能资料吗]]></description>
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 <author><![CDATA[1989xpp]]></author>
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 <pubdate><![CDATA[Sat, 14 Jul 2012 10:47:06 +0000]]></pubdate>
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 <description><![CDATA[在s7-300中查找变量功能即可]]></description>
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 <author><![CDATA[xiaxiedianzi]]></author>
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