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[非线性振动] 急求牛人们在用渐进法、多尺度法等推导方程的时候用什么工具? |
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发表于 2007-5-24 10:55
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发表于 2007-5-31 08:52
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回复 #1 naihuisong 的帖子
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发表于 2007-5-31 13:54
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