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[非线性振动] 刚度增大,共振频率却减小? 请问大侠是什么原因 |
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发表于 2012-11-26 13:37
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发表于 2012-11-27 11:07
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发表于 2012-12-4 14:48
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发表于 2012-12-5 09:11
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