Considering the change of stream gradient, we estimated the parameter of longitudinal coefficient of diffusion in different reaches.
依据河道比降的变化情况，对不同河段的纵向扩散系数进行估值。
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 extent of water mobility within biological tissues can be quantified by a parameter called the apparent diffusion coefficient (ADC).
水在生物组织内的流动程度，可以由一个被称为表观扩散复合系数（ADC）的参数去量化之。
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 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。
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 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。
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 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 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。
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；
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。
The mixture ratio of C40 Marine high performance concrete is optimized through test of the hydration heat of binding material, slump, chloride ion diffusion coefficient, anti-crack rand of concrete.
通过测试胶凝材料水化热、混凝土的坍落度和氯离子扩散系数、抗裂等级等性能，对C40海工混凝土的配合比进行了优化设计。
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。
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。
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 results showed that the intensity distribution had relation with the velocity of percolation, time, coefficient of convection and diffusion.
发现污染物在土壤中的质量浓度分布与渗流速度、作用时间、扩散系数等有关。
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。
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。
The variation of the carbon diffusion coefficient at the vicinity of the phase boundary during the process of eutectic solid state phase transformation of the phase boundary was analyzed.
然后分析了碳钢在过冷等温时，相界面共格的固态相变过程中，相界面附近碳的扩散系数变化的情况；
The finite diffusion model of CME was established, the activity coefficient ratio, the diffusion coefficient correction factor and the kinetic parameter were introduced and evaluated.
建立了CME的有限扩散理论模型，引入了活度系数比、扩散系数校正因子及动力学参数等。
Using alternating segment explicit implicit method for the variable coefficient convection diffusion equation. The method has the obvious property of parallelism and is unconditionally stable.
应用交替分段显隐方法求解变系数对流扩散方程，此方法具有很好的并行性且无条件稳定。
The classic finite difference approach is widely used, which is limited by ambiguity of diffusion coefficient between the grids or pores.
而传统的差分方法比较实用，却难以给出对分形介质网格之间的扩散系数。
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。
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。
This process of cellular damage causes an increase in the "apparent diffusion coefficient," or ADC, which is a measurement used to study the distribution of water in the brain.
这一细胞受损过程使“表观弥散系数(adc)”升高，ADC是研究脑中水分子分布的一种测量方法。
For the study, measurements were translated into scores called apparent diffusion coefficient (ADC) values for each of the participants.
每个参与者研究的测量结果被转化成一种叫做表现弥散系数(adc)的数值。
For the study, measurements were translated into scores called apparent diffusion coefficient (ADC) values for each of the participants.
每个参与者研究的测量结果被转化成一种叫做表现弥散系数(adc)的数值。
应用推荐