In the locomotive and car dynamics test,the dynamics index should be considered in the case of varying speed and line state,so the line state should be acquired in the dynamics test.

• 在机车车辆动力学性能试验中,必须考察评价被试车在各种不同的速度、线况下的动力学性能,为此在动力学试验中必须采集线路状况。