位置开关(120度间距)。可指定触点位置。
Three-position switch (120 deg. step). Contact positions can be specified.
可指定触点位置。
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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