分子动理论的基本内容是:物质是由大量分子组成的;分子都在不停地做无规则的运动;分子之间存在着相互作用的引力和斥力。人们从分子运动的微观模型出发,给出某些简化的假定,例如:将分子看成球形,分子的动能也和分子的速度有关(只不过此速度指分子的平均速度),结合概率等知识,可以对物体一些宏观 The basic content of the theory of molecular dynamics is: matter is composed of a large number of molecules; molecules are constantly doing random movements; there are interactions between the molecules of gravity and repulsion. From the microcosmic model of molecular motion, some simplifying assumptions are given. For example, the numerator is considered as a sphere, and the kinetic energy of the molecule is also related to the speed of the molecule (except that the speed refers to the average speed of the molecule), combining probability and other knowledge , Can be some macro objects