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 <title><![CDATA[万用表占空比的问题]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-112805.html]]></link>
 <description><![CDATA[Latest 50 replies of 万用表占空比的问题]]></description>
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 <title><![CDATA[工控人家园]]></title>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[侧量脉冲高低电平所占的比例]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-112805#1084855.html]]></link>
 <author><![CDATA[多愁善感]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 05 Jul 2011 00:53:20 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[是测量脉冲信号一个周期内的高电平与低电平的时间比的档位,]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-112805#1084826.html]]></link>
 <author><![CDATA[qinchenglim]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 04 Jul 2011 22:14:11 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:26] 是吧 牌子呢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-112805#1084812.html]]></link>
 <author><![CDATA[农夫]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 04 Jul 2011 18:26:38 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[占空比。就是高电平占的百分比。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-112805#1084780.html]]></link>
 <author><![CDATA[东方红]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 04 Jul 2011 15:08:03 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[是指针表吧，那是测量电池电量的挡位]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-112805#1084600.html]]></link>
 <author><![CDATA[圆家人控工]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 04 Jul 2011 12:06:50 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[你不会看说明书么?]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-112805#1084574.html]]></link>
 <author><![CDATA[hozhiwen]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 04 Jul 2011 11:45:42 +0000]]></pubdate>
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