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diffusion mass transfer
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  扩散传质
     Mathematics model of carbide coating growth kinetics on steel matrix surface in molten system is put forward based on the theory of unsteady diffusion mass transfer and subittics model of regular solution. Experiments of vanadium carbide coating treatment of commercial steels 45,4Cr5MoSiV1,T10,and Cr12MoV in molten V 2O 5—Na 2O—B 2O 3 system reduced by silicon are tested and verified.
     用非稳态扩散传质和规则溶液亚晶格理论建立了熔融体系下钢铁材料表面碳化物覆层成长动力学模型,并用硅还原V2O5—Na2O—B2O3熔融体系下45、4Cr5MoSiV1、T10、Cr12MoV四种钢碳化钒覆层实验进行了分析验证。
短句来源
     The liquid film diffusion mass transfer of adsorption of AuCl4- from hydrochloric acid with various concentrations through the film encompassing macroporous crosslinked polymethacrylate resin MET-802 was studied.
     研究了用大孔交联聚甲基丙烯酸酯吸附剂MET-802从不同浓度的盐酸中吸附AuCl_4的液膜扩散传质问题.
短句来源
     The transient diffusion mass transfer problem with first order homogeneous chemical reaction is analysed based on the revisory Fick’s first law. Compared with the case of disregard for non-Fick effect, it is shown that the non-Fick effect is considerable for transient diffusion mass transfer with first order homogeneous chemical reaction.
     以通用Fick第一定律为基础,对伴有一级均相化学反应的瞬态扩散传质问题进行了非Fick分析,本文结果与不计非Fick效应情况下伴有一级均相化学反应的一维瞬态扩散传质问题的结果相比表明:对伴有一级均相化学反应的瞬态扩散传质问题,非Fick效应是一个有必要考虑的因素
短句来源
     An equation of diffusion mass transfer for chlorine anion in reinforced concrete structure with circular section was deduced according to the binding capacity of concrete to chloride ion as well as the principle of mass transfer.
     依据质传递原理并考虑混凝土对氯离子的结合能力,建立了氯离子在圆形截面混凝土中的扩散传质方程。
短句来源
     According to the acid-rock reaction controlled by diffusion mass transfer and surface reaction, this paper presents 2D model of acid - rock reaction by applying the new theory of mathemetics -fractal in acid -rock heterogeneotis reaction system,and then analyses the influence of complex structure of rock grain on pickling rate to a certain extent.
     本文针对受扩散传质控制和表面反应控制时的酸岩反应情形,通过将当代数学新理论-分形几何学引入酸岩非均相反应系统,提出了酸岩二维反应分形模型,据此在一定程度上考察了岩矿颗粒表面复杂结构对酸溶蚀速率的相对影响。
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  “diffusion mass transfer”译为未确定词的双语例句
     Studies of Liquid Film Diffusion Mass Transfer in the Process of Ion Exchange ( I )
     离子交换过程中的液膜扩散传质研究(Ⅰ)
短句来源
     Non-Fick Effect of Transient Diffusion Mass Transfer with First Order Homogeneous Chemical Reaction
     存在均相化学反应的瞬态扩散传质问题中的非Fick效应
短句来源
     The Non-Fick Analytics in Transient Diffusion Mass Transfer with the Second Order Homogeneous Chemical Reaction
     伴有二级化学反应的瞬态质扩散非Fick分析
短句来源
     In granitic mylonite rutile precipitates preferentially in the pressure shadows of porphyroclasts and garnet occnrs as fine grains in narrow zones parallel to foliation,which all suggest that fluid is present in deformation of the UHP rocks and fluid-enhance diffusion mass transfer is another important deformation mechanism during UHP deformation.
     在花岗质糜棱岩中,金红石在刚性矿物的压力影中沉积,细粒的石榴石条带平行片理延伸,都说明超高压变形过程中有流体存在,流体助力的物质扩散迁移是又一个重要的变形机制。
短句来源
     In the past years,comprehensive attention has been paid on the monolithic materials for high performance liquid chromatography(HPLC) and capillary electrochromatography(CEC),due to their superior porosity,good permeability,large surface area and high diffusion mass transfer.
     整体柱具有通透性能良好和传质速度快等特点,可实现快速、高效、高通量的分离,近年来已引起人们的热切关注。
短句来源
  相似匹配句对
     APPLICATION OF TURBULENT DIFFUSION THEORY IN MINE MASS TRANSFER
     紊流扩散理论在井巷传质中的应用
短句来源
     THE RESISTANCE METHOD FOR DETERMINATION OF DIFFUSION COEFFICIENTS AND THE MASS TRANSFER COEFFICIENTS
     电阻法测定传质系数和扩散系数
短句来源
     Demonstrating the Tailing of Normal Chromatographic Peak by Theory of Diffusion and Mass Transfer
     用扩散和传质理论证明正常色谱峰为拖尾峰
短句来源
     Coefficient of Mass Transfer Process
     传质过程系数
短句来源
     Multiphase Diffusion Mass-Transfer in Shell-Core Type Ion Exchanger
     壳-核型离子交换剂复相扩散传质的理论研究
短句来源
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  diffusion mass transfer
The data obtained confirm the important role of the surface diffusion mass transfer in the growth of epitaxial GaAs layers on vicinals in the neighborhood of (111)A.
      
However, the sinterability of compacts from such powders increases substantially, which is associated with the elevated contribution of the intraparticle grain boundary diffusion into the diffusion mass transfer.
      
An analysis of the phenomena that occur inside and in the walls of dislocation cells in the formation of large-angle boundaries shows that intense cold plastic deformation activates the diffusion mass transfer.
      
Kinetics of the development of an intercrystallite crack by means of diffusion mass transfer
      
The nonisometric shape of the crystals and high rate of diffusion mass transfer promote the anomalous growth.
      
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A physic-mathematical model is presented for multiphase diffusion mass-transfer in shell-core type ion exchanger. Both liquid film diffusion and inner-particle diffusion, which control the mass-transfer rate, are unsteady-state processes in quasihomogeneous phase. An equation of exchange fraction is. systematically derived. The basic laws of kinetics offer a theoretical basis for selecting optimization parameters. This equation can also be used to determine inner-particle...

A physic-mathematical model is presented for multiphase diffusion mass-transfer in shell-core type ion exchanger. Both liquid film diffusion and inner-particle diffusion, which control the mass-transfer rate, are unsteady-state processes in quasihomogeneous phase. An equation of exchange fraction is. systematically derived. The basic laws of kinetics offer a theoretical basis for selecting optimization parameters. This equation can also be used to determine inner-particle diffusion coefficient and liquid film thickness.

本文提出了壳-核型离子交换剂复相扩散传质的物理数学模型.联合控制着传质速率的液膜扩散及粒内扩散是准均相内的非定态过程.系统地导出了交换度方程.动力学基本规律为选择最优化参数提供了理论依据,并可同时测算内扩散系数和液膜厚度.

The liquid film diffusion mass transfer of adsorption of AuCl4- from hydrochloric acid with various concentrations through the film encompassing macroporous crosslinked polymethacrylate resin MET-802 was studied. The results, deviated from the theoretical formula proposed by James J. Car-berry, show that the mass transfer coefficient Kf is in proportion to v7.4(v is kinematic viscosity) and the thickness of the film a is much larger than the diameter of the resin. The above results are discussed...

The liquid film diffusion mass transfer of adsorption of AuCl4- from hydrochloric acid with various concentrations through the film encompassing macroporous crosslinked polymethacrylate resin MET-802 was studied. The results, deviated from the theoretical formula proposed by James J. Car-berry, show that the mass transfer coefficient Kf is in proportion to v7.4(v is kinematic viscosity) and the thickness of the film a is much larger than the diameter of the resin. The above results are discussed and two general empirical equations for expressing Kf and σ are suggested.

研究了用大孔交联聚甲基丙烯酸酯吸附剂MET-802从不同浓度的盐酸中吸附AuCl_4的液膜扩散传质问题.结果表明,传质系数K_t与介质的运动粘度v的7.4次方成正比,且液膜厚度σ远大于树脂半径,与Carberry的理论式不符;并提出了可普遍适用的表达K_1和σ的经验式.

Pickling of rock is an important problem in acidizing of oil and water wells.According to the acid-rock reaction controlled by diffusion mass transfer and surface reaction, this paper presents 2D model of acid - rock reaction by applying the new theory of mathemetics -fractal in acid -rock heterogeneotis reaction system,and then analyses the influence of complex structure of rock grain on pickling rate to a certain extent.

岩石矿物颗粒的酸溶蚀是油气井酸化增产技术中的重要问题。本文针对受扩散传质控制和表面反应控制时的酸岩反应情形,通过将当代数学新理论-分形几何学引入酸岩非均相反应系统,提出了酸岩二维反应分形模型,据此在一定程度上考察了岩矿颗粒表面复杂结构对酸溶蚀速率的相对影响。

 
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