我将要尝试，完全弹性碰撞。
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.
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.
我还想做更多,完全弹性碰撞，我将用空气轨实验。
Now I want to do more completely elastic collisions, and I'm going to do that with the air track.
提出完全弹性碰撞和完全非弹性碰撞情况下冲击能测量原理。
A measurement method of impact energy is proposed for the situations of perfect elastic collision and completely inelastic collision.
根据赫兹接触理论和非完全弹性碰撞理论，合理地确定了各接触参数。
The contact parameters are reasonably determined by means of Hertz′s contact theory and non complete elastic collision theory.
我采取这个例子，我有个完全弹性碰撞-，意味着Q为-，这是我们刚讨论过的。
And I take a case whereby - I have a completely elastic collision — 0 that means Q is zero — the kind that we have just discussed.
我说我选择这个例子，它是完全弹性碰撞-，为0,Q, is, zero——，那么动能必然守恒。
I told you I chose the case of - a completely elastic collision — Q and so kinetic energy must be conserved.
在台球完全弹性碰撞的假设下，运用基本的理论力学原理对主球在碰撞目标球后、碰桌边前的运动规律进行了分析，给出了这段时间内主球的运动控制方程。
With the assumption that the billiards is perfectly elasticity and by adopting the basic theory of theoretical mechanics, the track of the main ball has been simulation analyzed.
在台球完全弹性碰撞的假设下，运用基本的理论力学原理对主球在碰撞目标球后、碰桌边前的运动规律进行了分析，给出了这段时间内主球的运动控制方程。
With the assumption that the billiards is perfectly elasticity and by adopting the basic theory of theoretical mechanics, the track of the main ball has been simulation analyzed.
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