水动力学

A mathematical model for the anode of a direct methanol fuel cell considering the mass transport in the whole anode compartment and the proton exchange membrane, together with the kinetic and ohmic resistance effects through the catalyst layer is developed. The influences of key parameters on methanol crossover and anode performance are investigated.

对于DMFC的阳极，本文描述了甲醇和水在阳极及质子交换膜中的传递过程、反应动力学和欧姆阻抗效应，建立阳极和PEM的数学模型，并探讨对甲醇扩散和阳极性能影响的主要因素。

The effect of water content, W〓, on apparent kinetic constants of lipase in AOT/isooctane reversed micelles was investigated.

研究了水含量W〓对AOT／异辛烷反胶团中脂酶表观动力学参数的影响。

The reaction kinetics was studied by selecting control-step method as well as modified Debye-Hückel activity coefficient model and Bromley osmotic coefficient model. The results show that the reaction order is 2 and apparent reaction activation energy 85.8 kJ/mol, and the reaction is mainly controlled by precipitation of KB5O8?4H2O.

采用选取控制步骤法并引入修正的Debye-Hückel活度系数模型和Bromley渗透系数模型研究了该反应的动力学的影响规律，得出反应级数为2，表观反应活化能为85.8 kJ/mol，反应主要受四水五硼酸钾晶体析出的控制。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。