该公司有一条完全弹性的需求曲线。
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.
它们是完全弹性的。
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.
这条牛仔裤有弹性，可以完全贴身。
它们粘在一起，这是完全非弹性碰撞。
They get stuck together because it's a completely inelastic collision.
我们失去了动能，这是完全非弹性碰撞。
We lose kinetic energy when there is a completely inelastic collision.
弹性纤维几乎完全消失。
在上面的第（2）中，我们曾仔细考虑过供给曲线不完全有弹性的可能性。
Under (2) we have been contemplating the possibility of supply being imperfectly elastic.
就像我说的，完全没有弹性，穿起来很不舒服。
It was, as I say, it had no stretch in it. It was uncomfortable.
如果杆的变形完全是非弹性变形时这也就没有什么区别了。
It would make no difference if the bar deformations were totally inelastic.
如果杆的变形完全是非弹性变形时这也就没有什么区别了。
It would make no difference if the bar deformations were totally inelastic.
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