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 <title><![CDATA[公试计算]]></title>
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 <description><![CDATA[[s:28] 
不明白]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-145508#1240628.html]]></link>
 <author><![CDATA[jingaoshu]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 04 Apr 2012 11:15:59 +0000]]></pubdate>
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 <description><![CDATA[貌似是一个负角的正切值]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-145508#1240330.html]]></link>
 <author><![CDATA[陈大围]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 04 Apr 2012 01:24:45 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[什么公式？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-145508#1240199.html]]></link>
 <author><![CDATA[奋斗人生]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 03 Apr 2012 14:18:29 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[25.4这个数字正好是公制英制转换单位！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-145508#1240178.html]]></link>
 <author><![CDATA[二手工控电器]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 03 Apr 2012 13:42:31 +0000]]></pubdate>
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 <description><![CDATA[[quote]引用楼主huhu于2012-04-03 18:44发表的 公试计算 :
谁能帮忙解答下面计算
B1=tg-1*18.9/39.6=25.4
[/quote]


这个什么意思？小学题目，还是别的意思！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-145508#1240168.html]]></link>
 <author><![CDATA[suuy79]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 03 Apr 2012 13:31:15 +0000]]></pubdate>
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