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 <title><![CDATA[光电开关工作原理]]></title>
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 <description><![CDATA[Latest 50 replies of 光电开关工作原理]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[下来学习一下，]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1143658.html]]></link>
 <author><![CDATA[hao7179636]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 17 Oct 2011 00:51:47 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1143152.html]]></link>
 <author><![CDATA[lozk]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 16 Oct 2011 02:56:19 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[打不开，浪费时间]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1142772.html]]></link>
 <author><![CDATA[金海洋]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 15 Oct 2011 08:39:08 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[多谢&nbsp;&nbsp;分享了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1142729.html]]></link>
 <author><![CDATA[zhangdingye]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 15 Oct 2011 07:29:29 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[感谢分享]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1142345.html]]></link>
 <author><![CDATA[fei1436]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 14 Oct 2011 13:20:39 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[下来学习一下]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1142333.html]]></link>
 <author><![CDATA[qq249640260]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 14 Oct 2011 12:58:04 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢分享。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1091261.html]]></link>
 <author><![CDATA[211开关]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 15 Jul 2011 13:10:37 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[不错&nbsp;&nbsp;讲得很明白]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1091074.html]]></link>
 <author><![CDATA[chsixi]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 15 Jul 2011 07:25:18 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[感谢，下了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1091073.html]]></link>
 <author><![CDATA[fxdvp200]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 15 Jul 2011 07:20:28 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[感谢分享]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1090890.html]]></link>
 <author><![CDATA[ft0752]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 15 Jul 2011 01:02:28 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[感谢分享 ，加分]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1090870.html]]></link>
 <author><![CDATA[283276325]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 15 Jul 2011 00:30:55 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[说到光电开关的原理，也没什么，就跟普通的开关差不多，只是接痛方式不一样罢了。
光电开关一般有三跟线，红，黑，蓝。
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 红色和黑色分别是24+和0V, 供电的
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1090799.html]]></link>
 <author><![CDATA[yuliang928]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 14 Jul 2011 15:31:40 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[下来学习一下，]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1090778.html]]></link>
 <author><![CDATA[yfan001]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 14 Jul 2011 14:39:58 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[过得去，简单了点]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1090737.html]]></link>
 <author><![CDATA[pc8mcu]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 14 Jul 2011 13:29:14 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢分享]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113805#1090727.html]]></link>
 <author><![CDATA[shenyijin]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 14 Jul 2011 13:13:44 +0000]]></pubdate>
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