动力冲击 meaning in Chinese

dynamic shock

The device for smoothing out the pourer impulses from the engine is the fly wheel .
消除发动机产生动力冲击的装置是飞轮。
On the one hand , the dynamic impacting action of moving vehicles to the bridge influences the working state and the using longevity of the bridge in direct
一方面，移动车辆对桥梁的动力冲击作用对桥梁的工作状态和使用寿命产生直接影响。