The determination of material structure, performance parameters and membrane resistance, membrane diffusion coefficient of the F4112 ion exchange membrane were introduced.

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。

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Several of the focuses of CFD model in packed-bed reactors were studied, namely, the momentum exchange coefficient, the capillary pressure and the void fraction.

近年来填充床反应器CFD数学模型韵几个研究重点是动量交换系数、毛细管压力以及床层空隙率的非均匀分布性。

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The method of exchange coefficient of cations involves a complex calculation procedure and fits to solve field problems.

阳离子交换系数方法计算过程复杂，适用于解决野外实际问题。

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