Through the single - group analysis, I filter the vibration signal which is main frequency.

通过单组分析, 分离出了该组主要振动频率的信号.

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From the calculating results, the main frequency of rail and sleeper lateral vibration is low.

从计算结果可知, 轨道结构的横向振动频率较低,且钢轨与轨枕的横向振动主频相接近.

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