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[车辆工程] 进气噪声频谱成分计算 |
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发表于 2008-6-18 11:59
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发表于 2008-7-12 21:21
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发表于 2008-7-17 16:54
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n是转速 单位r/min k=1.2.3.4.5.6……
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