They actually use the... the track, the... the skidding tracks of the wreck to calculate v prime, and then they can try to reconstruct the situation as it was before the collision.

他们实际是用轨迹，残骸的滑行轨迹,来计算出v’,就可以复原现场,和碰撞前一样。

youdao

They actually use the... the track, the... the skidding tracks of the wreck to calculate v prime, and then they can try to reconstruct the situation as it was before the collision.

他们实际是用轨迹，残骸的滑行轨迹,来计算出v’,就可以复原现场,和碰撞前一样。

youdao