2390| 5
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[线性振动] 请教一个关于振动的问题 |
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请楼上的赐教,我自学的材料力学,也没有这方面的计算式呀?
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发表于 2006-10-29 13:42
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显示全部楼层
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发表于 2006-10-29 15:51
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