介绍了F4112离子交换膜的材料结构、性能参数及膜电阻、膜中扩散系数的测定方法。
The determination of material structure, performance parameters and membrane resistance, membrane diffusion coefficient of the F4112 ion exchange membrane were introduced.
根据以往的室内和野外试验结果，总结了各种岩土材料扩散系数的测定方法和具体数量范围。
Methods to determine the diffusion coefficient for different geotechnical materials and their numerical rage are summarized based on the results of previous laboratory and field tests.
介绍了反应物在聚合物膜中扩散系数的测定方法。对于聚合物修饰电极上反应机理的研究提供了有力的指导。
Measuring method of reactant diffusion coefficient in polymer film was introduced. This would provide potent guidance for researching reaction mechanism.
利用恒流放电法测定了金属氢化物（MH）电极中氢原子扩散系数的平均值。
The average value of hydrogen diffusion coefficient in metal hydride(MH) electrode was measured by constant current discharge method.
一个略加改进的电化学氢渗透技术被用于测定氢在铁膜中的扩散系数。
The diffusion coefficient of hydrogen in an iron membrane was measured using slightly improved electrochemical hydrogen permeation technique.
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.
配制四组不同混凝土配合比的试件，采用基于离子扩散和电迁移提出的NEL法对饱盐混凝土试件的氯离子扩散系数进行测定。
In this paper, four different ratio groups of concrete specimens are tested, using NEL method which is based on ion diffusion and electrical migration.
配制四组不同混凝土配合比的试件，采用基于离子扩散和电迁移提出的NEL法对饱盐混凝土试件的氯离子扩散系数进行测定。
In this paper, four different ratio groups of concrete specimens are tested, using NEL method which is based on ion diffusion and electrical migration.
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