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   diffusion of 在 环境科学与资源利用 分类中 的翻译结果: 查询用时:0.527秒
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diffusion of
相关语句
  扩散
    DIFFUSION OF PARTICULATE MATTER AND WIND SPEED PROFILE IN PLANETARY BOUNDARY LAYER
    固体微粒的扩散与行星边界层风速廓线
短句来源
    Diffusion of A When It Enters an Internal Boundary Layer
    烟羽进入内边界层时的扩散
短句来源
    Lateral Diffusion of Boron and Phosphorus in Silicon and It Leads to Problem of Failure for CMOS LSI
    硅中硼磷的横向扩散及其引起的CMOS LSI失效问题
短句来源
    Studies on Models for the Diffusion of Oxygen in Electrolyte Solutions
    氧在电解质溶液中扩散模型的研究
短句来源
    OVERVIEW OF INFLUENCE BY BUILDINGS ON DIFFUSION OF AIR POLLUTANTS
    建筑物对空气污染物扩散影响的研究
短句来源
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  中扩散
    Studies on Models for the Diffusion of Oxygen in Electrolyte Solutions
    氧在电解质溶液中扩散模型的研究
短句来源
    Experiment Investigation on Diffusion of Radionuclide Ejection from Uranic Ventilation in Atmosphere
    铀矿通风尾气中放射性核素在大气中扩散的实验研究
短句来源
    The atmosphere dispersion theory was used to analyze the influence ol calm wind and gravity action on the diffusion of dust particles .
    利用大气扩散理论分析了静风和重力沉降两种作用对尘粒在大气中扩散的影响;
短句来源
  扩散规律
    Study on the diffusion of the pollutant in Changjiang river with Rhodamine-B as tracer have been carried out by using autowater-fluorimeter (LGC1-lA) developed by the authors.
    用罗丹明-B染料作示踪体研究了长江九江段溶解污染物质的扩散规律
短句来源
    Environmental science in China has developed rapidly for the last 20 years. The studies on the transportation and diffusion of pollutants in the atmospheric and aquatic environments , based on the basic theories of environmental hydromechanics, are comparable to those in the world.
    20年来中国环境科学发展甚为迅速,根据环境流体力学基本理论,研究污染物在大气和水环境中迁移扩散规律,与国际上同类研究并驾齐驱。
短句来源
    The rule of transport,diffusion of air pollutants in the area was considered in full,and the simple andeasy model to obtain the average allowable emission amount of sulfur dioxide in the per unit area was selecta.
    充分考虑当地大气污染物传输、扩散规律,采用简易的模式求取各单元的SO_2平均允许排放量,即为该单元的SO_2容量。
短句来源
  “diffusion of”译为未确定词的双语例句
    A STUDY ON THE DIFFUSION OF DROPLET OIL UNDER WATER SURFACE
    石油以油滴形式向水下扩散的研究
短句来源
    Study on Adsorption, Mechanism of Mass Transfer and Diffusion of SO_2 by Activated Carbon Fiber (PAN—ACF)
    活性碳纤维(PAN-ACF)对SO_2的物理吸附、传质机理和扩散的探讨
短句来源
    NUMERICAL COMPUTATION OF THE DIFFUSION OF THE CONTAMINANTS AND THE FLOW FIELD OF SKEW DISCHARGES INTO A CHANNEL
    NUMERICAL COMPUTATION OF THE DIFFUSION OF THE CONTAMINANTS AND THE FLOW FIELD OF SKEW DISCHARGES INTO A CHANNEL
短句来源
    A BFG model for calculation of tidal current and diffusion of pollutants in nearshore areas
    A BFG model for calculation of tidal current and diffusion of pollutants in nearshore areas
短句来源
    Backward calculation based on the advection and diffusion of oil spills at sea
    海面溢油对流扩散的反向计算
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  diffusion of
One DR peak associated with the short-distance diffusion of oxygen vacancies was observed in both temperature and frequency spectra.
      
The method of NMR spin echo with the magnetic field pulse gradient was used for studying self-diffusion of water molecules in the radial root direction.
      
Diffusion of an Organic Cation into Root Cell Walls
      
Nonspecific pore-forming proteins (porins) are the major proteins of the outer membrane of Gram-negative bacteria responsible for diffusion of low-molecular-weight compounds.
      
Furthermore, these inhibitors not only reduce the local tissue damage but also retard the easy diffusion of systemic toxins and hence increase survival time.
      
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This paper describes a method of the determination of the chloride ion with conlometrically generated silver ion, in which the silver plate(stated purity 99.999%) is used as a generator anode, the platinum net used as a cathod, the Ag_2S ion-selective electrode for the indicator electrode and the reference electrode is the Type 217 calomel electrode for two salt bridge. Sodium chloride is solid weighted, before adding the sample, it was resolved with small amount of distilled water.During electrolysis,the solution...

This paper describes a method of the determination of the chloride ion with conlometrically generated silver ion, in which the silver plate(stated purity 99.999%) is used as a generator anode, the platinum net used as a cathod, the Ag_2S ion-selective electrode for the indicator electrode and the reference electrode is the Type 217 calomel electrode for two salt bridge. Sodium chloride is solid weighted, before adding the sample, it was resolved with small amount of distilled water.During electrolysis,the solution is stepwise dropped from a pipet to the electrolyte; therefore, on one hand the diffusion of silver ion to cathodic electrolyte can be eliminated, and on the other hand the error caused by the precipitate of silver chloride to inclusion the sodium chloride being avoided because of the addition of the solid samples.When the four groups of 0.2, 0.3, 0.4 and 0.5 grams are weighted, the mean values of their purities are 100.002%, 99.998%, 99.999% and 100.000% respectively, which show that the purity values of determination are within a good agreement. The sources of random and systematic errors are analysed also, the standard deviation of this method is 0.005%, and when the confidence level is about 99%, the total uncertainty is 0.006% for the measurement of sodium chloride.

本文描述我们用精密库仑滴定法电产生银离子测定氯离子的方法,采用纯度为99.999%的银片作阳极,铂网作阴极,用Ag_2S离子选择电极作为指示电极,参考电极为217型双盐桥甘汞电极。氯化钠采用固体称样,加样前加入少量蒸馏水使之溶解,在电解过程中分步加样。这样既防止了实验中产生的银离子向阴极扩散,又避免了由于固体加样造成氯化银的沉淀包藏氯化钠引起的误差。在称样量为0.2克组、0.3克组、0.4克组、0.5克组的情况下,其纯度值分别平均为100.002%、99.998%、99.999%和100.000%,这表明测得的纯度值的一致性很好。文中对随机误差和系统误差的来源作了分析,测量方法的标准偏差为0.005%;在置信概率约为99%时,氯化钠测量的总的不确定度为0.006%。

The purpose of this paper is to study the desulfurization of coal in the pressurized fluidized-bed coal gasification process, to develop a mathematical model to simulate the generation and diffusion of hydrogen sulfide in coal particles in such a coal gasifier and to predict the production of hydrogen sulfide from it. The paper includes the establishment of the partial differential equation and its boundary conditions, the determination of the data of kinetics of chemical reactions and transport properties,...

The purpose of this paper is to study the desulfurization of coal in the pressurized fluidized-bed coal gasification process, to develop a mathematical model to simulate the generation and diffusion of hydrogen sulfide in coal particles in such a coal gasifier and to predict the production of hydrogen sulfide from it. The paper includes the establishment of the partial differential equation and its boundary conditions, the determination of the data of kinetics of chemical reactions and transport properties, the transformation of the partial differential equations into the finite difference equations, and the computer programming concerned. The result conforms to common reality and the experimental data from the pilot plant gasifier at North Carolina State University, U. S. A.

本文研讨在加压流化床煤气化条件下煤中硫化物的脱除问题,并提出一个数学模型用以模拟此种气化炉的煤粒中硫化氢的发生和扩散现象和预估硫化氢的总发生率。本文包括偏微方程和边界条件的建立,化学动力学和输运性质数据的决定,偏微分方程向有限差分方程的变换,以及计算机程序的编制。计算结果和一般实际情况及美国北卡州大学现有的试验气化炉的实测结果基本相符。

This paper deals with a general survy of the law of transport and diffusion of suspended pollutants in river and develops the considerations of both minimum size of suspended particulate matter and saturation suspended mass content of flow as the criterion of pollutants transporting and diffusing. A two dimensional mathematical model is established and studied with corresponding experimental data introduced as unifications.

工业排放的悬移污染物(如煤泥、尾矿砂等)进入河流后,它们的运动规律和天然悬移物(泥沙)一样,受重力和水力的联合作用,在河流中作迁移扩散运动。有关这方面的研究,Fischer等人(1979)、我国东北师范大学(1979)、南京大学(1983)等单位曾有报道。本文试图在前人工作的基础上,对悬移污染物在河流中的迁移扩散规律、水力挟带能力以及污染带二元流问题,作初步探讨。

 
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