本文根据质量守恒定律建立了一种配平化学反应方程序的数学模型，并给出了模型的人工解法和计算机解法。
According to conservation of mass, this article establishes a kind of mathematical model for the equation equilibrium of chemical reaction, and also gives its solution both by man and by computer.
本文根据质量守恒定律建立了配平化学反应方程序的数学模型，并给出了模型的人工解法和计算机解法。
According to conservation of Mmass, the article establishes a mathematical model for the equation equilibrium of chemical reaction, and gives its solution both by man and by computer.
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；
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.
应用推荐