coefficient of diffusion
英 [ˌkəʊɪˈfɪʃnt ɒv dɪˈfjuːʒən]
美 [ˌkoʊɪˈfɪʃnt əv dɪˈfjuʒən]
扩散系数
双语例句
- Concentration coefficient of diffusion
扩散[的]浓度系数 - The depth-averaged mixing coefficient of pollutant diffusion and dispersion in coastal zone is studied experimentally.
海岸区域的波浪引起的污染物的输移扩散存在不同于水流的情况特征。 - In this paper, a coefficient model of the anisotropic diffusion based on the characteristic of human visual system ( HVS) is proposed and a diffusion speed parameter is employed.
根据人类视觉系统的特性提出一个各向异性扩散系数模型，并且引进了扩散速率因子。 - The difference in the network structure could be characterized by the kinetic parameters such as the apparent diffusion kinetic constant ( Ka), the coefficient of diffusion ( Da) and half-diffusion value ( t1/ 2).
并根据溶质扩散动力学参数，如表观速率常数（Ka）、表观扩散系数（Da）以及半扩散时间（t（1/2））的区别，反映出凝胶网络结构特征。 - Also, study on galvano-chemistry dynamics of lithium insertion and extraction shows that coefficient of diffusion of lithium ions in electrodes materials enhance with the heat treatment temperature increasing.
通过电化学嵌脱锂动力学研究发现随热处理温度升高，锂离子在电极材料中的扩散系数增大。 - With actual measurement, some thermodynamic parameters such as bulk specific heat volume C ρ, coefficient of heat conductivity λ, and coefficient of heat diffusion H were obtained.
对计算中用到的材料参数如体积比热容Cρ、导热系数λ和热扩散系数H进行了实际测量和校正。 - Furthermore, the effect of anisotropic diffusion coefficient on longitudinal dispersion coefficient and the effect of vertical distribution of diffusion coefficient on longitudinal dispersion coefficient are also studied.
非各向同性扩散系数对纵向离散系数的影响；以及扩散系数的垂向分布对纵向离散系数的影响。 - The model of coefficient including the effect of water vapor diffusion on heat transfer was developed based on quasi steady heat and mass transfer theory.
应用准稳态传热传质理论，在考虑水蒸气扩散对传热作用情况下，分别建立了奶牛初乳在真空冷冻干燥中多孔干燥层有效导热系数、冻结层导热系数和水蒸气扩散系数的测试模型。 - The coefficient of molecular diffusion in crystalline rocks is an important hydrogeologic parameter that affect the migration of substance in rocks.
结晶岩石分子扩散系数是影响岩石内部物质运移的重要水文地质参数。 - The diffusion lengths of Al component calculated from error function were larger than that calculated from coefficient of diffusion formula.
由于样品未作高温热退火处理，为此由Al组分误差函数模型推导的扩散长度要大大高于扩散系数公式。 - Using ASED-MO method, the binding energies for different adsorption orientations and positions of H_2O molecule on Pt ( l00), and the activation energies and coefficient of surface diffusion are calculated.
本文采用ASED-MO方法，计算了几O分子在Pt（100）面上不同吸附取向、不同吸附位置时的结合能，以及表面扩散激活能和扩散系数。 - Furthermore, the regression analysis result shows that the nonlinear relationship between damage and coefficient or depth of chloride diffusion can be established well.
回归分析结果表明，混凝土的损伤与氯离子扩散系数、扩散深度之间均可以建立良好的非线性关系。 - D. The effective coefficient of diffusion of active carbon-ethanol, active carbon-methanol, 13X-water and 13X-ethanol are decrease according to the dynamic adsorption properties.
从动态吸附性能看，活性碳甲醇、活性碳乙醇、13X水、13X乙醇依次具有递减的有效吸附扩散系数和有效脱附扩散系数。 - On the friction coefficient of diffusion coefficient model
基于摩擦系数的扩散模型 - Experimental data and numerical result show that the coefficient of turbulent diffusion D.
实验及数值计算结果表明，混合水箱中油滴紊动扩散系数Dz沿水深而增大，呈指数分布； - In this paper, thin rock permeating method has been proposed, which can efficiently observe the molecular diffusing phenomenon in crystalline rocks, calculating the coefficient of molecular diffusion.
为此，本文提出薄片渗透测试方法，能够有效地观测出结晶岩石分子扩散现象，计算出分子扩散系数。 - Parameter estimation about the drift coefficient of a diffusion process
一类扩散过程中漂移系数的参数估计 - On the basis of these, the calculating formula of reaeration coefficient considering the coupling of molecular diffusion and turbulent diffusion is brought forward.
在此基础上提出了水体同时考虑分子扩散和紊动扩散耦合的复氧系数计算公式。 - It has been proved by the experiment that is an effective method in determing the coefficient of molecular diffusion in crystalline rocks.
实验证明，这是结晶岩石分子扩散系数测定的有效方法。 - This model mainly depends on the parameters below: surface albedo, surface roughness coefficient, moisture available coefficient of soil, thermal capacity and thermal diffusion coefficient of terrain, cloudage.
模式主要依赖于以下参数和物理量：地面反照率、下垫面粗糙度、土壤的可含水量、下垫面的热容量和热扩散系数、云量等参数。 - The specific capacity, the average coefficient of thermal expansion, the coefficient of thermal diffusion and the thermal conductivity of the composites decrease gradually with increasing Si content.
随着复合材料中Si元素总量的增加，复合材料的定比压热容、热膨胀系数、热扩散系数和热导率均逐渐降低； - These changes result from that the coefficient of ageing diffusion increases in high magnetic field.
强磁场作用于相变时引起的时效转变扩散系数的增加是以上变化的主要原因之一。 - In this paper, the effect of the measuring model of absoption coefficient of a-Si: H on the diffusion length measurement of minority carriers with SPV method was reported.
报道了a&Si：H的光吸收系数计量模式对少子扩散长度SPV法测量结果的影响。 - We make an assay of diffusion coefficient of anisotropic diffusion, and give a new principle to choose diffusion coefficient.
分析了各向异性扩散模型中的扩散系数，并给出了一个新的扩散系数的选取准则，在实验中取得了良好的效果。 - During the adsorption of acetone onto activated carbon, the diffusion coefficient showed an upward trend, and then decreased; therefore, the effective diffusion coefficient of acetone is equivalent to time-average diffusion coefficient.
丙酮在被活性炭吸附过程中，其扩散系数呈现先迅速增大而后逐渐减小的趋势。吸附质分子的有效扩散系数在数值上相当于其时均扩散系数。 - Two kinds of mineral admixture used in concrete, the water-gelled material ratio lower than 0.38 and the total amount of gelled material no less than 470kg/ m3 can reduce the coefficient of chloride diffusion effectively, and improve the ability of marine corrosion resistance of concrete.
采用双掺矿物掺合料，水胶比低于0.38，胶凝材料总量不少于470kg/m3，可有效降低氯离子扩散系数，提高混凝土抗海水侵蚀能力。 - The activation energy and prefactor of diffusion coefficient was obtained on the basis of diffusion coefficients under different temperature. These values are in agreement with the experimental data.
又由不同温度下的扩散系数结合阿仑乌斯公式导出了扩散系数方程和扩散活化能，其结果与实验值非常吻合。 - Compared with thermal diffusion, electric field reduces the diffusion activation energy of the metallic element and increases the diffusion coefficient at the same temperature. The diffusion coefficient of Mg and Al increases while the diffusion activation energy decreases with the increase of electric intensity.
相对于传统的热扩散，在温度相同下施加电场降低了金属元素的扩散激活能并且提高了扩散系数，随电场强度的增加，Mg、Al元素的扩散系数增大，扩散激活能下降。 - A novel diffusion coefficient is introduced with an analysis of diffusion mechanisms of P-M model, then the P-M model is improved.
通过对P-M模型扩散机理的分析，给出了一种新的扩散系数，改进了P-M模型。