楼主: 欧阳中华
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[线性振动] (聊砍)振型是实数还是复数,各有表示什么? |
发表于 2016-3-8 19:48
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发表于 2016-3-8 20:07
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发表于 2016-3-9 09:23
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发表于 2016-3-9 10:59
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