碰撞前没有动能。

There was no kinetic energy before...

youdao

机器的损坏是装船前剧烈碰撞造成的。

Damage to the machine is due to violent bumping before shipment.

youdao

机器的损坏是装船前剧烈碰撞造成的。

Damage to the machine is due to violent bumping before shipment.

youdao