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。
2
Pre-Cenozoic basin structure, residual thickness and trichotomous property of basement are all shown by the impact.
撞击表明了前新生代盆地的结构，残余厚度和地下三分性。
3
Current and future studies of the area where the oil rig exploded in April will be able to take into account the recent pre-spill data to help assess the incident's ecological impact.