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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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 <title><![CDATA[]]></title>
 <description><![CDATA[有图就好了. [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#475195.html]]></link>
 <author><![CDATA[duan5984]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 31 Mar 2009 04:42:51 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢前辈了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#475183.html]]></link>
 <author><![CDATA[sinmung]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 31 Mar 2009 04:36:54 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[正学习，谢谢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#474814.html]]></link>
 <author><![CDATA[杨帆勇]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 30 Mar 2009 15:54:49 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:21]&nbsp;&nbsp;[s:21]&nbsp;&nbsp;[s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#466014.html]]></link>
 <author><![CDATA[dannyla3]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 22 Mar 2009 09:41:46 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[呵呵!又充了回电,谢谢!]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#457815.html]]></link>
 <author><![CDATA[xumomei]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 15 Mar 2009 05:24:48 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[已收藏，以后好好看啊！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#454466.html]]></link>
 <author><![CDATA[zhaolg]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 12 Mar 2009 00:47:51 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[绝好的东西哦！楼主要是能在里边加入各个接口的图片，就能让初学者很好的分辨了！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#452516.html]]></link>
 <author><![CDATA[枫泪电气]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 09 Mar 2009 11:45:30 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#452289.html]]></link>
 <author><![CDATA[优进]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 09 Mar 2009 07:23:33 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[建议将原理接线图附在上面就更好了 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#428510.html]]></link>
 <author><![CDATA[zhangshichao]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 08 Feb 2009 05:18:12 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习了，谢谢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#420395.html]]></link>
 <author><![CDATA[dongyuankai]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 24 Jan 2009 12:13:25 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[[s:17]&nbsp;&nbsp;[s:17]&nbsp;&nbsp;[s:17]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#419049.html]]></link>
 <author><![CDATA[周建锋]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 20 Jan 2009 10:31:06 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习了，谢谢[s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#417086.html]]></link>
 <author><![CDATA[yfan58]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 18 Jan 2009 07:23:28 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢楼主，学习了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#413907.html]]></link>
 <author><![CDATA[jhsh7231665]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 14 Jan 2009 03:26:16 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[应该在实物上怎么区分这三种，请LZ解释]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#400616.html]]></link>
 <author><![CDATA[fert]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 29 Dec 2008 07:46:11 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[不错，学习]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#400446.html]]></link>
 <author><![CDATA[xiaoyu3008]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 29 Dec 2008 05:02:11 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[[s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#399894.html]]></link>
 <author><![CDATA[825098]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 28 Dec 2008 12:36:33 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[太好了，谢谢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#398592.html]]></link>
 <author><![CDATA[海红]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 27 Dec 2008 04:17:03 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[有没有更基础点的原理呢！希望有人介绍下]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#393524.html]]></link>
 <author><![CDATA[jq_2007]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 21 Dec 2008 11:42:28 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[hao hao&nbsp;&nbsp;hao ----------hao]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#393518.html]]></link>
 <author><![CDATA[psj]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 21 Dec 2008 11:31:16 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习了 应该有装换头用吧。速率会受影响]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#393516.html]]></link>
 <author><![CDATA[qkec8000]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 21 Dec 2008 11:29:29 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习了，谢谢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#393272.html]]></link>
 <author><![CDATA[jsdfybl]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 21 Dec 2008 07:00:18 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[又长见识了!]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#387624.html]]></link>
 <author><![CDATA[duantao]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 16 Dec 2008 05:54:12 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[xuexile]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#386489.html]]></link>
 <author><![CDATA[zhaowh-20]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 15 Dec 2008 05:31:17 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习了解]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#386315.html]]></link>
 <author><![CDATA[魏鹏杰]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 15 Dec 2008 03:36:30 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习学习 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#385481.html]]></link>
 <author><![CDATA[xyc]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 14 Dec 2008 05:48:50 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[好东西!谢谢楼主!!]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#380236.html]]></link>
 <author><![CDATA[liangtd]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 09 Dec 2008 08:32:02 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[我刚刚学习！还没有学到通信！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#379145.html]]></link>
 <author><![CDATA[盐城兆洋]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 08 Dec 2008 07:23:06 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[[s:17]利害]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#379082.html]]></link>
 <author><![CDATA[vincent_911]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 08 Dec 2008 06:16:23 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习学习,]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#379043.html]]></link>
 <author><![CDATA[lxxzzw]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 08 Dec 2008 05:31:55 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢学习了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-14247#377739.html]]></link>
 <author><![CDATA[侯献波88]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 06 Dec 2008 13:58:25 +0000]]></pubdate>
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