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扩散流动
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  diffusion flow
     Besides the influence of temperature on specific heat of mixture, considered is also that of diffusion flow due to concentration discrepancies, thus making the theoretical model more exact.
     除考虑温度对混合气比热的影响外,还考虑了由于浓度差异产生的扩散流动对混合气比热的影响,从而使理论模型进一步精确化。
短句来源
  “扩散流动”译为未确定词的双语例句
     COLD VAPOUR ATOMIC ABSORPTION DETERMINATION OF MERCURY IN SOIL AND PLANTS USING A FLOW INJECTION GAS DIFFUSION SYSTEM
     气体扩散流动注射冷原子吸收法测定土壤、粮食中痕量汞
短句来源
     The development of morphologies, activate energy of curing reaction and the relationship between rheological behavior and phase separation were followed by Optical Microscopy (OM), Scanning Electron Microscopy (SEM), Time-Resolved Light Scattering (TRLS) and rheolometry.
     通过比较链增长和逐步聚合体系的相分离差别,发现由于扩散流动的主体不同,即前者为环氧单体(Monomer)而后者为环氧增长链(Growing epoxy),造成二者在相分离时热塑性富集相不同特征流变时间和特征形变时间比,即动力学不对称性的差异。
短句来源
     In this paper, B. B. Golubef method[1] is used for calculating the radial diffuse flow between two parallel disks for the first step, the momentum integral equation together with the energy integral equation is derived from the boundary layer momentum equation, then the expression of secondary approximation explicit function which is the entrance region duct length accompanied by the boundary layer thickness can be obtained by using Picard iteration[2] in the solution of the energy integral equation.
     本文首先将B.B.方法推广至二平行圆板间的径向扩散流动,由边界层运动方程式同时推导出动量积分方程式和能量积分方程式,而后再用Picard逐次逼近法解能量积分方程式,求得进口段通道长随边界层厚度而改变的二级近似显函数表达式。 从而为进口段效应诸系数的直接解析分析提供了可能。
短句来源
     In addition, when Cd pellets are put into the Cd reservoirs outside of HC, the diffusion of Cd vapor in the laser tube is preliminarily Probed.
     初步探讨外贮Cd时Cd蒸汽在激光器中的扩散流动
短句来源
     High pressure collimated jet is characterized by three distinct flow regions:breakup,collimation and back flow.
     高压准直管水射流具有扩散流动段、平行流动段和回气流动段;
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  相似匹配句对
     respectively,which indicates that the diffusion of methane in coal is in fact the flow through micropores.
     甲烷在煤中的扩散实为通过微孔的流动
短句来源
     A GRAVITY CURRENT FLOW DUE TO DOUBLE-DIFFUSIVE EFFECTS
     双扩散效应引起的异重流流动
短句来源
     Nonlinear Diffusion
     非线性扩散
短句来源
     Modernity with Flowing Feature
     流动的现代性
短句来源
     The Space of Flows
     流动空间
短句来源
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  diverging flow
The results are given of calculations of supersonic diverging flow past the spherical front of a body obtained using the Navier-Stokes equations.
      
Whether for locally parallel flow or slowly diverging flow, even at low levels of acoustic forcing, the inviscid linear theory is seen to be inadequate for predicting the amplitude of the forced mode.
      
Transitional intermittency distribution in a three-dimensional constant pressure diverging flow
      
Intermittency measurements are made in the transition-zone of a three-dimensional constant pressure diverging flow in order to study the effect of lateral strain rate on the intermittency distribution.
      
The flow behavior of a polystyrene and a polyethylene melt has been studied during extrusion through successive capillaries arranged to produce converging and diverging flow patterns through the two orifices.
      
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  diffusion flow
It is noted that under diffusion flow conditions the self-similar equation of a magnetohydrodynamic boundary layer with fixed boundary conditions at the wall and at infinity permits an innumerable set of solutions.
      
Effect of bis(hydroxyethyl)triethylenetetramine on a hydrogen diffusion flow across a steel membrane from chloride solutions con
      
During current passage through an electrolyte solution, ions entrain their hydration shells, which gives rise to the accompanying diffusion flow of water molecules and internal convection analogous to that observed in superfluid He3+He4 solutions.
      
It is shown that the conventional explanation of this mechanism for magnetosensitivity, which is thought to be based on deflection of the charge-carrier diffusion flow by a magnetic field, is basically incorrect.
      
The influence of the diffusion flow of these clusters on the percentage of SiO4 tetrahedral chains of various lengths in the SiO2 bulk was noted.
      
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This paper gives a short review on the history and the present state of sintring research. It seems to be reasonable to divide the course of the history into three periods. Major emphasis is placed on illustration of the foundation of sintering theory and its current developments. Different studies concerning the mass-transport mechanism in sintering have in detail been described and discussed. These involve viscous flow, vaporisation-cond-ensation, volume,surface and grain-boundary diffusions,and plastic flow.However,...

This paper gives a short review on the history and the present state of sintring research. It seems to be reasonable to divide the course of the history into three periods. Major emphasis is placed on illustration of the foundation of sintering theory and its current developments. Different studies concerning the mass-transport mechanism in sintering have in detail been described and discussed. These involve viscous flow, vaporisation-cond-ensation, volume,surface and grain-boundary diffusions,and plastic flow.However, some modified theories of sintering are dealt with concerning so-called concurrent sintering mechanism. From these, a complex-action theory presented by Huang Peiyun has been specially reported. In consideration of the fact that the sintering occurs by a combination of diffusion, flow and

本文是对烧结研究的历史和现状的简要评述。有理由将烧结研究的发展史划分为三个阶段。重点论述了烧结理论的创立及其现在的发展。详细描述和讨论了有关烧结过程物质迁移机构的各种研究工作,它们包括粘性流动,蒸发凝聚,体积、表面和晶介扩散以及塑性流动。然而,修正过的一些烧结理论是论述那些称作联合烧结机构的,其中特别报导了黄培云提出的综合作用理论。考虑了烧结的发生是扩散、流动和物理一化学反应的联合作用,能导出一个lnln dm=d0/dm-d对1/T的线性方程,其中d0和dm是烧结开始和终了时粉末压制试样的密度,d是在给定时间和绝对温度T经过等温烧结后的瞬时密度。

In this paper, B. B. Golubef method[1] is used for calculating the radial diffuse flow between two parallel disks for the first step, the momentum integral equation together with the energy integral equation is derived from the boundary layer momentum equation, then the expression of secondary approximation explicit function which is the entrance region duct length accompanied by the boundary layer thickness can be obtained by using Picard iteration[2] in the solution of the energy integral equation. Therefore,...

In this paper, B. B. Golubef method[1] is used for calculating the radial diffuse flow between two parallel disks for the first step, the momentum integral equation together with the energy integral equation is derived from the boundary layer momentum equation, then the expression of secondary approximation explicit function which is the entrance region duct length accompanied by the boundary layer thickness can be obtained by using Picard iteration[2] in the solution of the energy integral equation. Therefore, this has made it possible to analyze directly and analytically the coefficients of entrance region effect. Especially when the outer diameter of the disk is less than the entrance region length, the advantage of this method can be prominently shown.

本文首先将B.B.方法推广至二平行圆板间的径向扩散流动,由边界层运动方程式同时推导出动量积分方程式和能量积分方程式,而后再用Picard逐次逼近法解能量积分方程式,求得进口段通道长随边界层厚度而改变的二级近似显函数表达式。从而为进口段效应诸系数的直接解析分析提供了可能。特别是当圆板外径小于进口段长度时,更加突出地表现了本方法的优越性。 由于采用了能量积分方程式,则压力损失系数的各项才得以从理论上独立地推导出来。本文所提供的压力损失系数计算值,在进口修正雷诺数Re<100时,和文献[3]比较与实验值更为接近。因此在该范围内本文的结果既可靠又简便。

In this paper, the mechanisms of cireulslion generatioon in an expansion channel was analysed. It is shown that the convective terms in the moinentain equations are in generating cireulation. Unsteady circulation velocity fields were calculated for a two dimensional model. A eomparision of the results with the velocity fields measured by a two-channel larser-Dopplar velocimeter shows good agreement.

本文分析了明槽突然扩散流动中环流产生的机理。得出了动量方程中非线性对流项和底部阻力项是模拟环流的必要条件。用相应的数学模型计算了非恒定环流流速场,其结果与用双面激光多普勒流速计所测量的流速场相比较,符合良好。

 
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