Based on momentum balance and the law of momentum conservation, two new graphic methods are developed to determine the pre-impact vehicle momentum or collision speed in this paper.
本文根据动量平衡和动量守恒定律的基本原理，提出了两种推算碰撞前汽车动量或碰撞速度的图解方法。
Zhe Liang red Mazda 6 because of excessive speed, collided with the vehicle in front, a powerful shock of the impact body is torn.
这辆红色的马自达6因为车速过快，与前车发生了碰撞，强大的撞击力使得车身被撕裂。
The main factors are reinforcing dike with silt, construction in high speed, soak deformation, poor drainage, stacking load at the tip of dike, impact of vehicle and so on.
大堤开裂的主要原因为背河侧放淤、淤背施工过快、湿化变形、排水不畅、堤顶堆载、车辆作用等。
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