Terms containing set of particles

Subject	English	Chinese
tech.	set of particles	质点集
scient.	The mechanical energy of any moving system of particles must be "quantized", that is, it may take on only one of a certain set of discrete values.	任何运动粒子系的机械能都必定是"量子化的"、即只可釆取一组离散值中的某一值。