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[综合讨论] 离心压缩机的振动求教 |
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发表于 2011-12-7 23:11
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发表于 2011-12-12 14:42
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发表于 2011-12-13 08:56
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发表于 2011-12-13 15:15
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点评
赞成,轨迹应该是一倍频的
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