2231| 9
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能否从振动测得的电压时间曲线得到系统的固有频率,谢谢 |
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发表于 2007-3-23 21:39
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回复 #2 loren_xia 的帖子
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发表于 2007-3-25 12:05
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发表于 2007-3-28 22:01
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发表于 2007-3-28 23:58
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