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[求助] 怎样简单快捷的判断异氰酸酯是脂肪族还是芳香族的? |
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发表于 2009-5-8 12:14:55
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如有好料,欢迎联系我。
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发表于 2009-5-8 12:30:40
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发表于 2009-5-8 12:38:30
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发表于 2009-5-8 13:12:05
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天若负我,我便昊;尔等若负我,我便晃!
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发表于 2009-5-8 16:30:43
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发表于 2009-5-14 12:14:20
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