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1·According to the law of conservation of mass, the mathematics model of Modified-Atmosphere Packaging (MAP) is educed.

根据质量守恒定律和果蔬采后呼吸生理，推导出薄膜气调包装(map)的数学模型。

2·Taking the henhouse as semi-obturation system, dynamic conservation of NH3 in henhouse under ventilation condition was analyzed based on the law of conservation of mass.

利用物质守恒原理，以鸡舍为半封闭系统，分析了鸡舍内NH3在通风状态下的动态守恒情况。

3·According to the Law of Conservation of Mass, we have established the mathematical model of heavy metal pollution in Le 'an River, and have attempted to find the solution to it.

根据质量守恒定律，建立乐安河重金属污染数学模型，并对其进行了求解。

4·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。

5·According to the law of mass conservation the incremental mass density can be inferred from the divergency of the scalar unperturbed mass density and the vectorial displacement field.

由质量守恒定律，质量密度增量来自未挠动的质量密度的散度和位移矢量场。

6·Combining discussion with true examples, this essay solves certain chemical exercises of Junior Middle School through the law of mass conservation flexibly.

文章论述与实例相结合，灵活运用质量守恒定律，解答具有一定难度的初中化学习题。

7·This paper traces the establishment of law of mass conservation historically and probes into the application of law of mass conservation in junior middle school chemistry teaching.

对质量守恒定律的建立进行历史追踪；探讨质量守恒定律在初中化学教学中的运用。

8·On the basis of molecular diffusion Fick's law and principles of energy and mass conservation, a simplified model of frost growth on a surface is presented.

根据斐克分子扩散定理及能量、质量守恒原理，提出一种表面霜增长的简化模型。

9·Based on the theory of gas percolation, law of mass conservation and hydrodynamics, basic mathematical equation of gas flow model was established.

依据瓦斯渗流理论、质量守恒定律和流体力学，建立了瓦斯流动数学模型的基本方程。