楼主: p123456q
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[线性振动] 前两阶固有频率相同是什么意思?谢谢 |
发表于 2006-9-17 09:28
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发表于 2006-9-19 21:29
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前两阶频率相同是很正常的事
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发表于 2006-10-12 20:01
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