在干湿交替区域混凝土中氯离子的输运属于在孔隙非饱和状态下离子浓度扩散和对流耦合的渗透。
The flow of chloride ions in the concrete of dry-wet cycling region is the combining of diffusion and advection.
煤层气在煤储层中的扩散是指从煤基质孔隙表面上解吸的煤层气运移到割理系统的主要过程。
The diffusion of coalbed methane in coal reservoirs is defined that the main process of coalbed methane desorbed from coal matrix pore surface migrated to cleat system.
扩散系数小、孔隙度低、渗透性差的材料适于做覆盖材料。
It was indicated that the covering with low diffusion coefficient, small porosity and bad permeability was suitable to cover the pile.
核磁共振测量中孔隙流体中分子以极快速度扩散的运动。
The rapid rate of diffusion of molecules in pore fluids during a nuclear magnetic resonance (NMR) measurement.
方法通过对氡在土壤中扩散理论的分析，建立土壤氡析出率数学模型，该模型考虑了土壤的镭含量、射气系数、孔隙度和含水饱和度等因素对氡析出率的影响。
Methods Based on soil radon diffusive theory, a model including the influences of soil radium content, emanation coefficient, soil porosity and moisture saturation on radon exhalation was established.
研究了18种具有不同孔结构参数的铜基甲醇合成粒状催化剂孔隙率对有效扩散系数的影响。
The influence of porosity on the effective diffusion coefficients was studied for 18 of Cubased catalysts, which have the different pore structure parameters.
讨论了质子交换膜燃料电池运行电流密度和温度、阴极和阳极加湿温度、气体扩散层孔隙率等参数对以上结果的影响。
The effect of the current density and fuel cell temperature, humidified temperature of cathode and anode, porosity of porous diffusion layer on the results mentioned above are discussed.
在碳酸盐岩和其它一些系统中，束缚水和毛细管束缚水之间、普通孔隙和微小孔隙之间易发生快速扩散。
Fast diffusion is also considered to occur between most clay - and capillary-bound water, between normal pores and micropores within some carbonates, and in some other systems.
高温下煤灰发生熔融，将会堵塞煤焦表面孔隙，增大气体扩散阻力，降低气化反应速率。
The gasification reaction rate would reduce because ash would melt, which will plug the coal surface pores and increase gas diffusion resistance.
土壤容重、孔隙大小、孔隙类型及土壤颗粒组成中粘粒含量对土壤水分扩散率都有一定的影响。
Then, the bulk density, porosity, the type of pore and clay content in the soil affected the soil moisture diffusivity.
原因主要是随着电解质离子半径的增大，在模板炭孔隙中的扩散阻力增加。
The reason could be interpreted as smaller ions diffused more easily in the micropores.
有限扩散模型则利用孔隙率与扩散系数和频率间的函数关系测定；
Using the function between the porosity and the diffusion coefficient and frequency in the diffusion impedance, the finite diffusion model evaluated the porosity.
分析了比表面积、平均孔径、孔隙率等孔隙特性参数对扩散的影响，获得了分形多孔介质中气体扩散系数与平均孔径的函数关系。
The effect of pore characteristics on gas diffusion was analyzed. The relationships between the specific area, average pore diameter and porosity with the diffusion coefficient were obtained.
烧结坯孔隙度大幅度增加，增加量为21% 32%。原板坯中的孔隙及偏扩散是造成烧结坯孔隙的主要原因。
The increment of Ti-Al sheets porosity is 21%32%, and the prime reasons are considered to be the existence of the porosity in sheet bars and Al self-diffusion in the process of reactive synthesis.
研究了18种具有不同孔结构参数的粒状铜基甲醇合成催化剂孔隙率对有效扩散系数的影响。
The influence of porosity of 18 kinds of Cu - based catalysts of methanol synthesis on the effective diffusion coefficients is studied. The catalysts have the different parameters of pore structure.
煤焦表面的活性点、煤焦内在的催化剂以及反应气在煤焦孔隙之间的扩散能力是影响煤焦气化反应活性的重要因素。
Carbon activity sites, inherent catalysts and diffusivity of the reactant gases within the pores of the chars played key role in the gasification process.
煤焦表面的活性点、煤焦内在的催化剂以及反应气在煤焦孔隙之间的扩散能力是影响煤焦气化反应活性的重要因素。
Carbon activity sites, inherent catalysts and diffusivity of the reactant gases within the pores of the chars played key role in the gasification process.
应用推荐