将传质方程引入到垂直管降膜蒸发传热模型中,求解时考虑了径向速度、质量扩散系数和膜厚变化对传热的影响。
The mass transfer equation was introduced into heat transfer model of falling film evaporation. The radial velocity, mass diffusion coefficient and variation of film thickness were taken into account.
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.
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.
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