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 <title><![CDATA[RS232，RS422，RS485的区别]]></title>
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 <description><![CDATA[Latest 50 replies of RS232，RS422，RS485的区别]]></description>
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 <description><![CDATA[来点实际的设备控制线路图，程序。硬件照片]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1438764#1492516.html]]></link>
 <author><![CDATA[qrklove]]></author>
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 <pubdate><![CDATA[Wed, 02 Oct 2013 00:20:43 +0000]]></pubdate>
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 <description><![CDATA[长知识了,，谢谢了。]]></description>
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 <author><![CDATA[lgz]]></author>
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 <pubdate><![CDATA[Tue, 01 Oct 2013 23:12:38 +0000]]></pubdate>
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 <description><![CDATA[来学习了，谢谢了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1438764#1492495.html]]></link>
 <author><![CDATA[34586019]]></author>
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 <pubdate><![CDATA[Tue, 01 Oct 2013 17:01:06 +0000]]></pubdate>
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 <description><![CDATA[和没说一样]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1438764#1491462.html]]></link>
 <author><![CDATA[sunsongfang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 28 Sep 2013 12:10:01 +0000]]></pubdate>
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 <description><![CDATA[学习哈]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1438764#1491460.html]]></link>
 <author><![CDATA[tom541100]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 28 Sep 2013 11:51:27 +0000]]></pubdate>
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 <description><![CDATA[学习了非常感谢楼主 [s:39]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1438764#1491452.html]]></link>
 <author><![CDATA[工控土包子]]></author>
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 <pubdate><![CDATA[Sat, 28 Sep 2013 11:09:41 +0000]]></pubdate>
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 <description><![CDATA[长知识了[s:39]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1438764#1491427.html]]></link>
 <author><![CDATA[模糊涂蛋]]></author>
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 <pubdate><![CDATA[Sat, 28 Sep 2013 09:35:18 +0000]]></pubdate>
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 <description><![CDATA[不错不错啊]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1438764#1491385.html]]></link>
 <author><![CDATA[laoliao]]></author>
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 <pubdate><![CDATA[Sat, 28 Sep 2013 08:04:42 +0000]]></pubdate>
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