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本文以实例说明碰撞模型所具有的瞬时性、动量守恒性、动能不增加原理、碰撞结果必须符合实际情况等特点。
In this paper, an example is given to illustrate that the collision model has the characteristics of instantaneity, momentum conservation, kinetic energy increase principle, collision results must conform to the actual situation and so on.