4268| 17
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有2个固有频率很接近,但振型不一样为什么? |
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发表于 2014-11-28 16:31
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点评 | ||
发表于 2014-11-28 16:34
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点评赞成: 5.0
赞成: 5
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发表于 2014-11-29 10:47
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发表于 2014-11-29 11:04
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发表于 2014-11-30 21:07
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