... 峰度,尖峰值 kurtosis 频率曲线的峰度 kurtosis of frequency curve 低阔峰度 platykurtosis ...
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The position of knee point of Phase-frequency characteristic mean value curve is invariant, but the kurtosis of the curve near the knee point decreases.
刚度与质量参数随机时相频特性均值曲线的拐点位置不变,只是拐点附近曲线陡峭度减小。
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