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 <title><![CDATA[磁场问题]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1583914.html]]></link>
 <description><![CDATA[Latest 50 replies of 磁场问题]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[有趣，但精神可嘉。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1583914#1896914.html]]></link>
 <author><![CDATA[好久不见啦！]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 14 Jun 2017 12:14:43 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[难道你能随意改变磁铁的极性？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1583914#1896783.html]]></link>
 <author><![CDATA[谭锡峰]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 14 Jun 2017 04:38:30 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[quote]引用第4楼咗臉ヅ微笑ぺ于2017-05-19 09:55发表的&nbsp;&nbsp;:

磁铁靠近磁铁，磁场不是本来就会相互影响的么，怎么可能不变化
[/quote]
我试过很多次都会改变]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1583914#1896684.html]]></link>
 <author><![CDATA[机电是我]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 13 Jun 2017 14:14:37 +0000]]></pubdate>
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 <description><![CDATA[[quote]引用楼主机电是我于2017-05-18 22:25发表的 磁场问题 :
我用磁铁做一个无限能旋转。但我做了一个才发现每个磁铁的磁场会改变，这是为什么?所以我想问问大家是不是磁铁摆放的位置不对？还是有别的问题我没想到?
[/quote]
磁铁靠近磁铁，磁场不是本来就会相互影响的么，怎么可能不变化]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1583914#1890278.html]]></link>
 <author><![CDATA[咗臉ヅ微笑ぺ]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 19 May 2017 01:55:59 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[难道永动机又出江湖了？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1583914#1890268.html]]></link>
 <author><![CDATA[往事如风]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 19 May 2017 01:23:59 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我估计是磁铁的重心没有找准]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1583914#1890264.html]]></link>
 <author><![CDATA[周家大少]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 19 May 2017 00:50:47 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[怎么可以无限的旋转？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1583914#1890262.html]]></link>
 <author><![CDATA[huiyang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 19 May 2017 00:47:31 +0000]]></pubdate>
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