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列车荷载分为两部分：车体轴重和轨道不平顺引起的轮轨动力作用力。
The source of vibration excitation is divided into two components: the axle load and the roughness-induced dynamic loads.
文摘：轨距扩大和钢轨侧翻将影响到轮轨接触点位置和动力作用。
Abstract: the widening of gauge and the overturning of rail will effect the contact point and dynamic forces between wheel and rail.
轨距扩大和钢轨侧翻将影响到轮轨接触点位置和动力作用。
The widening of gauge and the overturning of rail will effect the contact point and dynamic forces between wheel and rail.
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