- 质点: mass point; material particl ...
- 集: gather; assemble; collect
- 点集: [数学] point set; point-group; set of points◇点集论 point set theory; 点集拓扑学 [数学] point set topology; 点集系 system of point-groups; system of point sets
- a-质点: a-particle
- 质点: mass point; material particle; material point; point particle; point unit; [力学] particle
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