The process of one substance mixing spontaneously with another is called diffusion.
一种物质自发地与另一种物质混合的过程称为扩散。
It is doubtful that the diffusion or ideal mixing stage models can satisfactorily represent the behavior of gas in fluidized beds.
扩散模型或者理想混合级模型能否满意地表示气体在流化床中的性状是可以怀疑的。
Based on experimental results from a flume, a systematical study on the properties of sediment diffusion in turbulent mixing region at the mouth of cecum reach was made.
本文在分析水槽模型试验结果的基础上，简要论述了盲肠式河段口门紊动掺混区的水流紊动和泥沙扩散特性。
The mixing layer flow was numerically simulated by the discrete vortex method, in which the diffusion velocity method was adopted to model the viscosity.
对混合层流动进行了数值模拟。采用了离散涡方法。计算中采用扩散速度法处理粘性作用项。
There are many factors which affect the mixing of microfluidic, such as the inlet velocity, diffusion coefficient, depth-width ratio, and so on.
影响微流体混合的因素有很多，如入口速度、扩散系数、深宽比等。
This paper has focused on nonlinear diffusion of sewage from factories and rivers on mixing region of salt and fresh water of seaward firth. Finite element method has been used in this paper.
本文考虑盐淡水混合海湾沿岸的工厂和河流汇入污染物的非线性扩散现象，用有限元法进行数值分析计算。
The process of conversion of methane to nana-carbon black and acetylene via thermal Plasma is under the control of mixing and diffusion rate.
本装置上，等离子体热解天然气制乙炔和炭黑的动力学不是由反应速度控制，而是由混合与扩散控制。
The air exhauster has diffusion pipe, mixing chamber and exhaust pipe successively.
本抽气器内顺次设置扩散管、混合室、排气管。
Comparison of the calculation results shows that it is more rational using the mixing zone depth to control the cooling water diffusion for deeper water.
在对计算结果比较后认为，当水深较大时，采用掺混层的厚度控制温排水扩散更为合理。
The increase of lobe diffusion angle results in the increase of velocity circulation at the lobe exit section, but it raises the mixing loss and lowers the pressure recovery coefficient.
扩张角的增加可提高速度环量，但是流动混合损失增加，总压恢复系数减小。
The diffusion effects of two types of diffusion depth of cooling water, such as the whole water depth and the mixing zone, are calculated by using a two-dimensional mathematical model.
采用平面二维数学模型计算了温排水扩散深度为全水深和掺混层两种情况。
The effect of the stochastic field on the degenerate four-wave mixing signal intensity hag been studied basing on the phase-diffusion model.
本文在相位扩散模型的基础上，研究了随机场对简并四波混频输出强度的影响。
The effect of the stochastic field on the degenerate four-wave mixing signal intensity hag been studied basing on the phase-diffusion model.
本文在相位扩散模型的基础上，研究了随机场对简并四波混频输出强度的影响。
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