And this diffusion coefficient we'll define in a few moments.
这个扩散系数，我们一会就定义出来。
Diffusion coefficient is one of the important parameters deciding migration prediction in migration model of compounds from food packaging material.
在食品包装材料化合物的迁移模型中，扩散系数是决定模型预测性的重要参数之一。
The mass transfer equation was introduced into heat transfer model of falling film evaporation. The radial velocity, mass diffusion coefficient and variation of film thickness were taken into account.
将传质方程引入到垂直管降膜蒸发传热模型中，求解时考虑了径向速度、质量扩散系数和膜厚变化对传热的影响。
The diffusion coefficient of hydrogen in an iron membrane was measured using slightly improved electrochemical hydrogen permeation technique.
一个略加改进的电化学氢渗透技术被用于测定氢在铁膜中的扩散系数。
The calculation of chloride diffusion coefficient in prestressed concrete structures eroded by chloride ion is discussed.
针对氯盐侵蚀的预应力混凝土结构，讨论了氯离子扩散系数的计算。
The average value of hydrogen diffusion coefficient in metal hydride(MH) electrode was measured by constant current discharge method.
利用恒流放电法测定了金属氢化物（MH）电极中氢原子扩散系数的平均值。
The determination of material structure, performance parameters and membrane resistance, membrane diffusion coefficient of the F4112 ion exchange membrane were introduced.
介绍了F4112离子交换膜的材料结构、性能参数及膜电阻、膜中扩散系数的测定方法。
The factors that influence the nutrients release behavior are as followings: membrane thickness, granule radius, diffusion coefficient, nutrients composition and nutrient dissolving property.
影响聚合物包膜肥料养分释放的因素主要有：膜厚、颗粒半径、扩散系数、养分组成及其溶解特性。
To calculate distribution of sediment concentration in vertical under wave and current, a model of silt diffusion coefficient distribution in vertical is set up.
为了计算波流共同作用下含沙量沿垂线的分布，建立了沿垂线分布的泥沙扩散系数模型。
In the extraction of components with the phenomena of thermal runaway, choosing the critical temperature can lead to a greater diffusion coefficient.
对可能发生热失控现象的物质进行提取时，萃取温度应选择在临界温度附近，此时扩散系数较大。
Therefore, global variance normalized was proposed to measure spatial detail, and then a new diffusion coefficient was given.
为此，用全局归一化的局部方差度量空间细节，得到新的扩散系数。
Decreasing hydraulic conductivity and diffusion coefficient may delay the increasing rate of the concentration ratio at the base of a GCL.
结果表明，减小渗透系数和扩散系数可以有效减缓衬垫底部浓度比的增加速度。
The paper presents the new compatible formula which indicates the relationship between the diffusion coefficient of cationic dyes and relative affinity of dyes.
文中介绍了用于表示阳离子染料的扩散系数和相对亲和力的关系的新相容条件式。
Because natural gas and water have different relaxation time and diffusion coefficient, we can use DSM and SSM to identify them.
由于天然气和水的弛豫时间和扩散系数的差异，可以利用差谱分析法和移谱分析法来识别天然气。
The equilibrium absorption studies indicate that the permselectivity of the anion exchange membrane is related not only to the component solubility, but mean diffusion coefficient as well.
三种抗衡离子膜的平衡吸收实验表明，该阴离子膜的选择渗透性不仅与醇水在膜中的溶解度有关，而且取决于平均扩散系数。
It's shown from measured data that the distribution in vertical of sediment diffusion coefficient can be obtained correctly by the model.
实测资料表明该模型可以比较准确地直接计算泥沙扩散系数沿垂线的分布。
Based on the concept of activation energy and microwave absorption power density, the formula of diffusion coefficient due to the effect of microwaves is derived.
利用活化能的概念和微波吸收功率密度表达式得到微波作用下的扩散系数表达式。
The ambipolar diffusion coefficient of charged copper species in copper vapor laser is theoretically deduced.
推导了铜蒸气激光器带电粒子的双极扩散系数。
The simulated radial distribution function and diffusion coefficient also accord with experiment basically. Rather, the pair distribution function is consistent with the literature reported.
模拟获得的径向分布函数和扩散系数的值与实验基本吻合，分子间作用能分布也与文献报道的趋势一致。
Results of homogeneous turbulence experiments show that the diffusion coefficient varies with the size and density of sediment particles, just as indicated by the theoretical analysis.
表达式显示出的扩散系数随垂向脉动流速均方根值和颗粒粒径、密度而变化的趋势与实验结果吻合。
This paper provides an equation to estimate the chloride diffusion coefficient from concrete mixture proportions, points out the problems in applications and discusses some influential factors.
介绍了一种由混凝土组成材料预测其氯离子扩散系数的经验计算公式，指出应用中注意的问题，并讨论了主要影响因素。
Methods to determine the diffusion coefficient for different geotechnical materials and their numerical rage are summarized based on the results of previous laboratory and field tests.
根据以往的室内和野外试验结果，总结了各种岩土材料扩散系数的测定方法和具体数量范围。
Measuring method of reactant diffusion coefficient in polymer film was introduced. This would provide potent guidance for researching reaction mechanism.
介绍了反应物在聚合物膜中扩散系数的测定方法。对于聚合物修饰电极上反应机理的研究提供了有力的指导。
The chloride diffusion coefficient of a concrete is an important parameter in predicting the corrosion of steel in a concrete and the durability of the structures.
混凝土的氯离子扩散系数是预测混凝土中钢筋锈蚀及结构耐久性的重要参数。
The appearance diffusion coefficient and the fractional anisotropy were measured for the splenium of the corpus callosum, the genu of the corpus callosum, and the hippocampus.
测量胼胝体膝部、胼胝体压部和海马的表观扩散系数和各向异性分数。
It was indicated that the covering with low diffusion coefficient, small porosity and bad permeability was suitable to cover the pile.
扩散系数小、孔隙度低、渗透性差的材料适于做覆盖材料。
The estimated diffusion coefficient agrees with experiment within an order of magnitude.
估计的反常扩散系数在量级上与实验一致。
Combined with the theory of viscosity, the relationship between diffusion coefficient and activation energy is expressed.
结合粘度理论建立了分子扩散系数与活化能之间的关系；
Combined with the theory of viscosity, the relationship between diffusion coefficient and activation energy is expressed.
结合粘度理论建立了分子扩散系数与活化能之间的关系；
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