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[结构振动] [求助]结构动力学对多自由度系统建模后得到的质量矩阵M一定是对称正定的吗? |
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发表于 2005-10-29 08:48
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回复:(lovehjn)[求助]结构动力学对多自由度系统建模...
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发表于 2005-10-29 19:59
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