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

我常叫它完全弹性碰撞，但其实并不需要这样叫。

youdao

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

我要继续此例，我有一个完全弹性碰撞。

youdao

We will deal with that today, and we call that an elastic collision.

我们今天要处理这情况，我们称它为弹性碰撞。

youdao

We will deal with that today, and we call that an elastic collision.

我们今天要处理这情况，我们称它为弹性碰撞。

youdao