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TYGF

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answer

¼îʽ̼Ëáпde·Ö×Óʽ   Zn5(CO3)2(OH)6  huo 3Zn(OH)2. 2ZnCO3
2Â¥2008-01-08 14:32:48
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wjhinsect

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wjhinsect

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renart306

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xueliwang001(½ð±Ò+5,VIP+0):лл
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renart306

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6Â¥2008-01-08 14:56:56
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summer355

½ð³æ (СÓÐÃûÆø)

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Originally posted by renart306 at 2008-1-8 14:55:
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