particle An object considered as having no size but having mass, displacement, velocity, acceleration, and so on. It is used in mathematical models to represent an object in the real world of negligible size. See also point mass.
particle
数学辞典收录了4151条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。