“two-body elastic collision”的概念、定义、翻译、参考文献-科学参考

单词	two-body elastic collision
释义	two-body elastic collision Encyclopedia 理学力学释 two-body elastic collision两体弹性碰撞两个物体从相距无穷远开始靠近，在短时间内发生强烈相互作用并改变运动状态，再分离至相距无穷远的过程，称为两体碰撞。如果整个过程中物体的内部状态没有发生改变，系统的总动能守恒，则为两体弹性碰撞。
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