| 单词 | point particle |
| 释义 | > as lemmaspoint particle point particle n. Physics a particle with no spatial extent; spec. one used as an idealized approximation of a real particle, with its entire mass treated as if it were located at its centre of gravity. ΚΠ 1917 D. H. Parker Self & Nature viii. 164 To every point-particle in the material spatial order constructed by the scientist there corresponds..a controlling force in the environment. 2004 K. Nakamura & T. Harayama Quantum Chaos & Quantum Dots i. 7 Here we assume the idealized situation: a billiard ball is taken as a point particle and the friction between the ball and billiard table is ignored. < as lemmas |
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