conservation of mass

基本解释

We invoke Dalton's Law of molar proportions, we write it subject to conservation of mass.
我们援引了摩尔分数的道尔顿定律，要服从质量守恒定律。
This paper defines what the law of conservation of mass means and its application in Junior chemistry.
论述了质量守恒定律的内涵，及其在中学化学解题中的应用。
Conservation of mass, second Newton's law, and momentum law are introduced into traffic flow to set up traffic continuity equation, Euler's equation, and momentum integral equation.
应用物理学中的质量守恒定律、牛顿第二定律、动量定律等，建立了交通流的连续性方程、欧拉方程和动量方程；

So, what's the conservation of mass if we divide by the atomic masses here?
那么质量守恒是什么呢？,如果我们在这儿按原子质量划分？
麻省理工公开课 - 固态化学导论课程节选
We invoke Dalton's Law of molar proportions, we write it subject to conservation of mass.
我们援引了摩尔分数的道尔顿定律，要服从质量守恒定律。
麻省理工公开课 - 固态化学导论课程节选
We write it subject to conservation of mass.
要服从质量守恒定律。
麻省理工公开课 - 固态化学导论课程节选

the principle that the total mass of any isolated system is constant and is independent of any chemical and physical changes taking place within the system