mass-energy equation

The burning behavior of 3 mm-thick PVC slabs ( 100 mm × 100 mm) at different temperatures was studied with a cone calorimeter. A single equation model of mass loss rate vs time was simulated with a chemical kinetic method.

使用锥形量热仪研究了聚氯乙烯（PVC）薄板在不同温度下的燃烧反应，采用化学动力学法拟合了PVC燃烧过程中质量损失率与时间的单方程模型。

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Derivation of the Formula of Mass-energy Equation Through an Ideal Experiment

从理想实验出发导出质能关系式

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According to the Newton's second law of motion, the law of conservation of mass, and Bingham plastic flow equation of slurry, as well as under top cement pulsation, the mathematical models of one dimensional pressure pulse propagation downwards in the cement column was established.

文中根据牛顿定律、质量守恒定律及水泥浆的宾汉塑性流变性，在顶部水泥脉冲振动作用下，建立了水泥浆中，一维压力传播的波动方程的数学模型。

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An improved three dimensional quasi static model is developed from conservation equation for momentum and mass in a terrain following coordinate system, to simulate the winter wind field and temperature field over the eastern part of the Lanzhou basin.

采用地形追随坐标系下具有1.5阶精度的三维准静力模式，模拟兰州东部地区的风场和温度场。

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The rise of a rocket and the fall of a rain drop are the problems of variable mass in classical mechanics. Usually, Mischelski equation is used to solve these problems.

火箭升空、雨滴下落等问题，是经典力学中的变质量问题，解决这类问题，主要是使用密舍尔斯基方程。

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By measuring the volume of hydrogen gas which is produced by an amount of metal reaction with excessive dilute acid, the number of hydrogen moleculars can be calculated from the gaseous state equation and the mass of hydrogen molecular, thereby, Avogadro constant can be obtained

通过测定一定量的金属与过量的稀酸反应产生的氢气的体积，由气态方程和氢分子的质量可以计算出氢分子个数，从而得到阿佛伽德罗常数

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