The model consists of a set of algorithms, describing the processes of advection, turbulent diffusion, surface spreading, vertical dispersion, emulsification and evaporation.
该模型包含了一系列的数学公式来描述对流、湍扩散、表面扩展、铅直扩散、乳化和蒸发过程。
In mine mass transfer the longitudinal dispersion coefficient is by far greater than the turbulent diffusion coefficient.
在井巷紊流传递过程中，纵向弥散系数远远大于紊流扩散系数。
Turbulent diffusion and longitudinal dispersion are two different physical concepts.
紊流扩散和纵向弥散是两个不同的物理概念。
The atmosphere dispersion theory was used to analyze the influence ol calm wind and gravity action on the diffusion of dust particles .
利用大气扩散理论分析了静风和重力沉降两种作用对尘粒在大气中扩散的影响；
Then this paper studied the effect of diffusion coefficient on concentration distribution and the conditions of substitution with numerical dispersion for physical diffusion.
通过将该半解析解与忽略扩散的数值解进行对比分析，讨论了数值弥散代替物理扩散的条件。
The reaction between -NCO and water, dispersion of polyisocyanates in polyols, and complete diffusion among different kinds of molecules are key problems to be solved in 2k-WPU.
NCO与水的反应、多异氰酸酯难于在多元醇中的分散均匀以及组份间分子链扩散交联不充分，是研究水性双组份聚氨酯的关键问题。
The reaction between -NCO and water, dispersion of polyisocyanates in polyols, and complete diffusion among different kinds of molecules are key problems to be solved in 2k-WPU.
NCO与水的反应、多异氰酸酯难于在多元醇中的分散均匀以及组份间分子链扩散交联不充分，是研究水性双组份聚氨酯的关键问题。
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