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。
From the calculating results, the main frequency of rail and sleeper lateral vibration is low.
研究了爆破振动能量多主频分布规律，进一步指出了地震波的传播特征。
The multi-mater-frequency characteristic of blasting seismic energy and the transmission characteristic of blasting seismic wave are studied.
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