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李千户营

金虫 (小有名气)


[交流] 【求助】麻烦各位,帮我判断这几种物质的极性大小

麻烦各位了,谢谢

[ Last edited by 李千户营 on 2010-12-23 at 10:21 ]
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liuming064

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看基团


李千户营(金币+1):谢谢参与
李千户营(金币+14): 2011-01-06 19:01:32
看基团的极性大小
2楼2011-01-05 17:08:02
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