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[非线性振动] 请教求解变刚度 固有频率的问题 |
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发表于 2007-6-10 21:20
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发表于 2007-6-10 21:57
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发表于 2007-6-11 08:58
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回复 #8 空山长风 的帖子
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发表于 2007-6-12 11:21
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发表于 2007-6-12 12:21
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发表于 2007-6-12 21:00
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