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 <title><![CDATA[这个怎么算出来的]]></title>
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 <description><![CDATA[Latest 50 replies of 这个怎么算出来的]]></description>
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 <description><![CDATA[真该回去好好学学数学了
 [s:26]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-45429#625712.html]]></link>
 <author><![CDATA[qwwee]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 15 Sep 2009 04:28:54 +0000]]></pubdate>
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 <description><![CDATA[1500/50*1.66=49.8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.332*5*30=49.8]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-45429#625697.html]]></link>
 <author><![CDATA[wangkai0000]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 15 Sep 2009 03:49:33 +0000]]></pubdate>
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 <description><![CDATA[1HZ对应的电机转速:1500/50=30RPM
50RPM对应的频率:50/30=1.67HZ

你要回去好好学学数学了]]></description>
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 <author><![CDATA[dv0429]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 15 Sep 2009 03:43:04 +0000]]></pubdate>
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