通过双膜理论分析得知，滴外传质是萃取过程的控制步骤。
Double film theory shows that the mass transfer outside the droplets is the controlling step.
根据双膜理论，导出了简化的芒硝氨盐水溶液碳酸化过程的宏观动力学模型。
On the basis of film theory, a simplified macro - kinetics model in carbonization process of aqueous ammonia - mirabilite solution is developed.
建立了描述连续逆流超临界流体喷淋萃取塔的流体力学关联式，根据双膜理论，建立了用于计算液相总体积传质系数的质量传递模型。
The study on hydrodynamics and mass transfer performance is carried out in a 25 mm diameter continuous countercurrent supercritical fluid extraction spray column.
建立了描述连续逆流超临界流体喷淋萃取塔的流体力学关联式，根据双膜理论，建立了用于计算液相总体积传质系数的质量传递模型。
The study on hydrodynamics and mass transfer performance is carried out in a 25 mm diameter continuous countercurrent supercritical fluid extraction spray column.
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