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yanhualover:谢谢交流 2010-07-13 11:05:41
我也遇到过类似情况,不过是C级错误,师姐那时说溶剂(一般是水)还没定出来,楼主要加油,需耐心
11楼2010-07-13 10:47:06
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wwt1806

木虫 (正式写手)

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小木虫(金币+0.5):给个红包,谢谢回帖交流
要是定不出来的话,可以通过热重,元素分析,等方法证明存在的水是多少,即分子式的正确性,也可以的。
鲲鹏展翅行千里,他日无风假何物?
12楼2010-07-13 18:11:12
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