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[结构振动] 【求助】请教 质量矩阵 和 刚度矩阵 都是什么单位啊? |
发表于 2019-12-11 17:50
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发表于 2020-2-11 10:29
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发表于 2020-3-1 17:08
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发表于 2020-3-1 23:40
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