列车系统的动力学性能不仅直接关系到列车运行速度能否提高，而且影响到列车的乘坐舒适性和运行安全性。
Therefore, a series of research tasks emerge from it. The dynamic performance of train system not only affects the increase of speed, but also the ride comfort and running safety.
列车纵向动力学性能是影响列车运行质量和运行安全的重要因素。
The performance of train longitudinal dynamics has important effect on quality and safety of train running.
重载列车在直线、曲线和坡道上牵引、惰行和制动时的动力学性能；
The dynamic performance while heavy haul train traction and braking on straight lines, curves and ramps railway road condition;
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