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 <title><![CDATA[如何将vb0的数据变成负数？]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113799.html]]></link>
 <description><![CDATA[Latest 50 replies of 如何将vb0的数据变成负数？]]></description>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[用取反指令]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113799#1092382.html]]></link>
 <author><![CDATA[xinqinghao]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sun, 17 Jul 2011 15:26:21 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼上是对的 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113799#1090627.html]]></link>
 <author><![CDATA[lhzxh1314]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 14 Jul 2011 09:22:56 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[VB0作为负数只能是-128，到不了255的，因为最高位为符号位。 [s:28]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-113799#1090561.html]]></link>
 <author><![CDATA[cvlsam]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 14 Jul 2011 07:50:29 +0000]]></pubdate>
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