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 <title><![CDATA[端口转换]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405260.html]]></link>
 <description><![CDATA[Latest 50 replies of 端口转换]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <title><![CDATA[]]></title>
 <description><![CDATA[顶，学习一下。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405260#1353712.html]]></link>
 <author><![CDATA[zhong1946]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 05 Oct 2012 13:05:30 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[422是全双工，485是半双工，貌似差不多]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405260#1353545.html]]></link>
 <author><![CDATA[陈大围]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 05 Oct 2012 05:20:23 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405260#1353515.html]]></link>
 <author><![CDATA[王风]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 05 Oct 2012 03:57:23 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:39]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405260#1353385.html]]></link>
 <author><![CDATA[qwe123zxclk]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 04 Oct 2012 12:25:46 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[把422的+和+，-和-连在一起就是485的+和-]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405260#1353313.html]]></link>
 <author><![CDATA[始终如一]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 04 Oct 2012 06:48:23 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[422就是四线485 [s:26]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1405260#1353303.html]]></link>
 <author><![CDATA[子丑寅卯9]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 04 Oct 2012 06:30:01 +0000]]></pubdate>
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