And they are completely elastic.
它们是完全弹性的。
I'm going to try to make completely elastic collisions.
我将要尝试，完全弹性碰撞。
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。
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。
Not completely elastic, but not bad. A tennis ball--not completely elastic, but not bad.
不是完全弹性的，但不坏，一个网球,-不是完全弹性的，但不坏。
Now I want to do more completely elastic collisions, and I'm going to do that with the air track.
我还想做更多,完全弹性碰撞，我将用空气轨实验。
I told you I chose the case of - a completely elastic collision — Q and so kinetic energy must be conserved.
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。
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。
The test results indicate the structure completely work at elastic state under the normal applying load and have enough cracking and strength safety factor.
试验结果表明：结构在正常使用荷载作用下完全处于弹性工作状态，具有足够的开裂安全系数和强度安全系数。
RCCA is treated by super low temperature. The result shows that VEC of RCCA is removed completely, without the damage of the internal elastic membrane of RCCA.
本研究以兔颈总动脉(RCCA)为材料，采用超低温方法处理RCCA，结果显示此法能够完全去除兔血管内皮细胞层，且血管内弹性膜毫无损伤。
The SU-8 photoresist was performed energy minimization and MD simulation time after time until the system achieved equilibrium completely. And the elastic constants were analysed with analysis tool.
在高温高压下对SU - 8胶反复进行能量最小化和分子动力学模拟，直到体系达到完全的平衡后，分析体系的静态弹性常数。
A measurement method of impact energy is proposed for the situations of perfect elastic collision and completely inelastic collision.
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。
The calculation of the springback of strips and shaped beams after their elastic-plastic bending has been solved completely.
全面地解决了板条和型材弹塑性弯曲后的回弹计算问题。
The calculation of the springback of strips and shaped beams after their elastic-plastic bending has been solved completely.
全面地解决了板条和型材弹塑性弯曲后的回弹计算问题。
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