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 <description><![CDATA[用接触器控制按6搂的做]]></description>
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 <author><![CDATA[罗佰均]]></author>
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 <pubdate><![CDATA[Sat, 28 Nov 2009 07:31:24 +0000]]></pubdate>
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 <description><![CDATA[通过改变直流电机电枢极性]]></description>
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 <author><![CDATA[dxd042]]></author>
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 <pubdate><![CDATA[Sat, 28 Nov 2009 07:09:24 +0000]]></pubdate>
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 <description><![CDATA[两个觉了接触器就搞定了！我在3年前就搞过了！]]></description>
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 <author><![CDATA[a888888]]></author>
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 <pubdate><![CDATA[Fri, 27 Nov 2009 07:33:42 +0000]]></pubdate>
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 <description><![CDATA[可以用接触器切换，改变电枢极性或着改变电机励磁极性可以改变电机旋转方向！]]></description>
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 <pubdate><![CDATA[Fri, 27 Nov 2009 06:30:06 +0000]]></pubdate>
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 <description><![CDATA[用接触器控制励磁和编码器时?高手..先等电机停了直流调速器控制才能动
另你可以调主线。要不换个4像限的.]]></description>
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 <author><![CDATA[渴望无限]]></author>
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 <pubdate><![CDATA[Fri, 27 Nov 2009 03:05:32 +0000]]></pubdate>
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