The relation of scale conversion is gotten by use of the mass conservation equation.

同时，引入质量守恒方程，得出弹体的比例尺度换算关系。

Without the mass conservation constraints, glpsol prints this error to stdout like so.

如果没有这种数量守恒约束，glpsol就会将下面的错误打印到stdout上。

Based on principle of mass conservation, this paper sets up mathematical model of gas water two phase steady flow.

从渗流力学的基本原理出发，基于质量守恒原理，建立了气水两相地层稳定渗流的数学模型。

Based on the mass conservation law, the energy conservation law and some empirical equations, the dynamic model is built.

根据基本的质量守恒定律、能量守恒定律以及一些经验公式等建立了系统的动态数学模型。

It accords with the results based on the law of mass conservation, and covers the current box models based on experience.

它不仅与由质量守恒定律求得的结果一致，而且包括了目前国内外根据实测或实验资料建立的多个箱型（经验）模式。