楼主: yangfeng1124
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[材料力学] 求教:应该怎样理解虚位移这个概念? |
发表于 2009-6-17 22:36
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材料力学里是这样的
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发表于 2009-6-18 12:49
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发表于 2009-6-21 19:44
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发表于 2009-6-22 21:38
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回复 19楼 nonlinear 的帖子
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发表于 2009-6-22 23:19
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