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equation of diffusion
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  扩散方程
     The regeneration of the resin was studied that regenerant of HCl was effective when the ratio of the quality of HCl to the volume of the resin was 350.The kinetics mechanism of metal ion exchange process on 1600H was studied and the results indicate that this ion exchange process was controlled by diffusion of liquid film, and by the data obtained from experiments we got the reaction rate and equation of diffusion of liquid film at different temperatures.
     本文对母固水中的金属离子在1600H树脂上的动力学机理进行了初步探讨,结果表明本过程近似为液膜扩散控制; 回归出各个温度下的液膜扩散的反应速率常数,得到了各个温度下的液膜扩散方程;
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  “equation of diffusion”译为未确定词的双语例句
     A Numerical Method for the Equation of Diffusion Wave
     扩散波方程的一种数值计算方法
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     The oxidation kinetic equation of diffusion controlling type are obtained separately for sialon matrix phase and SiC particle phase and sialon bonded SiC multiphase materials in multiphase materials firstly, which illustrate the protective effect of sialon matrix phase to SiC particle phase.
     首次分别得到复合状态下的β-sialon基质相、SiC颗粒相及β-sialon结合SiC复合相在1300℃下的分相扩散控制型抗氧化反应动力学方程,从各相的扩散控制型反应级数确认了β-sialon基质相对SiC颗粒相的高温氧化保护作用以及复相材料具有的优异抗高温氧化性能。
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     3. Taking microstructure as medium, relationship between diffusion coefficient and hydraulic conductivity was developed, and calculation equation of diffusion coefficient was obtained.
     3.将微观结构作为媒介,建立扩散系数与渗透系数之间的关系,得到扩散系数计算公式。
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     The two-dimensional diferential equation of diffusion is solved by numerical method and the fuel distribution downstream of ECI is calculated.
     利用数值法求解二元扩散微分方程,计算了雾化槽下游燃油密流与油气比的分布;
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     Based on the factors that affect the diffusion of vehicle exhaust gas for urban road, the general equation of diffusion box model of vehicle exhaust gas is established by analyzing dimensions.
     首次采用量纲分析法 (π定理 ) ,在确定城市道路汽车 (含其他机动车 )尾气污染物扩散影响因素的基础上 ,求导并建立了尾气扩散箱型模式的普遍式 .
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     ON THE EQUATION
     关于方程ф(x)=ф(y)
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     On the Diophantine Equation
     关于丢番图方程x~4+my~8=z~2
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     With optimization, the equation of T.
     采用最优化计算方法,对T.
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     ON THE SOLUTION OF THE BOLTZMANN EQUATION
     对玻尔兹曼方程式解法的讨论
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  equation of diffusion
Theoretical distributions of the hydrogen concentration were computed for an infinite cylinder model using the differential equation of diffusion.
      
As a result, evolution of the density of excited atoms within a layer of gas or a non-equilibrium plasma can be described by a simple differential equation of diffusion type.
      
A kinetic phenomenological model of the processes of atomization for atomic-absorptional spectrometry with electrothermal atomization that is based on solution of a one-dimensional equation of diffusion with two independent sources is suggested.
      
The model may involve diffusion or other random walk processes, leading to the solution in terms of the partial differential equation of diffusion or in terms of probability distributions.
      
We show that for a medium strictly satisfying the equation of diffusion, the method gives quite good results with nevertheless some inaccuracies for the extreme values of water contents.
      
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In this paper a number of problems in connection with the polarographic oxygen electrode are discussed.1. The equation of diffusion current for the dissolved oxygen in the body of the electrode has been derived and examined experimentally.2. The sources of the residual current has been analysed and found to be attributed to the crevice involved in Pt-glass border.3. According to the calculation of heat conduction of the system designed by us, the electrode should be independent of temperature.4. A design...

In this paper a number of problems in connection with the polarographic oxygen electrode are discussed.1. The equation of diffusion current for the dissolved oxygen in the body of the electrode has been derived and examined experimentally.2. The sources of the residual current has been analysed and found to be attributed to the crevice involved in Pt-glass border.3. According to the calculation of heat conduction of the system designed by us, the electrode should be independent of temperature.4. A design of the detector is described, thereby the contamination of the working electrode surface by the surface active substances can be avoided.Through the solution of these problems, the useful range of the oxygen cathode has been extended to less than 2 ppm in gases, and the response time has been reduced to 10 min (21%~0.01%). Moreover, the wear out time for the electrode has been extended over 6000 hours.

本文对极谱式氧电极进行了以下的研究:1.推导了电极体内溶解氧扩散电流方程式,并作了验证:2.找出了残余电流起因,主要受铂-玻璃界面封接状态的影响;3.推导了所设计的电极热传导方程式,解决了温度同步问题;4.提出防止电极钝化的方法;5.设计了低漂移高阻抗放大器线路。通过以上的研究提出了一种能测出2ppm氧,响应时间小于10分钟,寿命超过5000小时的氧电极。

The exact expressions of concentration and local or average Sherwood number, Sh or Sh for non-Newtonian power law fluids when the flow index n takes any positive rational value, have been obtained by solving the differential equation of diffusion together with the velocity distribution in the falling film.

本文从分析服从幂律的非牛顿流体薄膜流中速度分布入手,将其与扩散(导热)微分方程相结合,对不同的气液接触时间或距离进行了理论计算。 本文对方程给出了当流体的流变指数n取任意正有理数值时无穷级数解的求法。在此基础上,我们利用四阶Runge-Kutta法与Wegstien迭代法,求出了流变指数n为1/4,1/3,1/2,1/1.4,1/1.2,1,1.25,2.5,∞等一系列局部Sh数值与平均数值;当n=1即变为牛顿型流体时,与文献的结果十分吻合。

The mass transfer problem of oxygen in a plate membrane oxygenator without oxygenation was studied. For oxygen-blood system the mathematical model was presented. It was established on the basis of mass transferring chracteristics of oxygen in blood medium and resulted by the method of mathematical developing, i. e. by solving the relevantdifferential equations of diffusion. The theoretical expression of dimentionless average concentration and Sherwood number were obtained in this way and the results was...

The mass transfer problem of oxygen in a plate membrane oxygenator without oxygenation was studied. For oxygen-blood system the mathematical model was presented. It was established on the basis of mass transferring chracteristics of oxygen in blood medium and resulted by the method of mathematical developing, i. e. by solving the relevantdifferential equations of diffusion. The theoretical expression of dimentionless average concentration and Sherwood number were obtained in this way and the results was apparently supported by experimental facts in a silicone membrane oxygenator.The dimentionless correlation is given as follows:(?)_(LO)=0.055 Re~(0.59)Sc~(0.33)which, according to authors' opinion, can be used with advantage in the designing work of plate membrane oxygenator.

本文研究了平板膜式氧合器中不伴有氧合反应时氧在血液中的传质过程。根据氧在血液中传递特性建立了数学模型。通过解扩散微分方程,求得了氧在血液中的平均浓度,平均Sh(?)rwood数的理论表达式,并在硅胶平板膜式氧合器中进行了实验验证。在实验范围内(Re=0.8—25),还把Sherwood数关联成下列准数形式: (?)=0.055 Re~(0.59)Se~(0.33) 该式可供设计平板膜式氧合器时参考使用。

 
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