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物体运动状态的描述始终与所取参考系有关.选取合适的参考系,一方面有助于清晰而简洁地描述物体的运动情况;另一方面,合适的参考系也有助于简化解题过程,甚至可以突破一些在一般参考系下无法解决的物理问题.
The description of the state of motion of the object is always related to the reference frame taken.Selecting the appropriate frame of reference helps to describe the object’s movement clearly and succinctly on the one hand and the appropriate reference frame on the other hand also helps to simplify the problem solving process, Can even break through some of the physical problems can not be solved in the general frame of reference.