我要继续此例，我有一个完全弹性碰撞。

Now I want to continue a case whereby I have a completely elastic collision.

youdao

我常叫它完全弹性碰撞，但其实并不需要这样叫。

I will often call it a completely elastic collision, which is really not necessary.

youdao

我常叫它完全弹性碰撞，但其实并不需要这样叫。

I will often call it a completely elastic collision, which is really not necessary.

youdao