According to gradient theory early-developing regions should have mass transfer from early-developing regions to late-developing regions, but it does not happen as expected.

按照区域梯度理论应该发生的先发区域边际产业向后发区域的大规模转移，却没有按照预期的发生。

Based on turbulent diffusion theory and the mechanism of liquid-gas interfacial mass transfer, a conceptual model of turbulent re-aeration process is proposed.

本文根据紊动扩散理论及气液界面质量传递过程，提出了紊动水体复氧过程的概化模型。

Double film theory shows that the mass transfer outside the droplets is the controlling step.

通过双膜理论分析得知，滴外传质是萃取过程的控制步骤。

Based on the fact, a simplified drying model of heat and mass transfer is deduced from volume average theory.

对多孔介质体积平均理论进行简化，得到简化的热质传递干燥模型，用一个理论式表达模型中有效扩散系数。

The model of SO2 absorption in the impinge stream scrubber is established based on unsteady state mass transfer reaction theory.

针对新型的液柱冲击塔，用非稳态传质反应理论建立了塔内so_2吸收过程的物理和数学模型。

Analysing in the view of molecular kinetic theory, paste flowability is a shift of molecular mass center by the jump of polymer chain segment, and it affects the mass-transfer directly.

从分子运动角度分析，糊料流动是高聚物大分子链段协同“跳跃”而实现整个分子质量中心位移，对传质具有直接影响。

In this paper, an equation for the local blood-side Sherwood number is derived from the advancing front theory (AFT) for mass transfer of oxygen in a parallel plate membrane oxygenator.

以下用于计算平板膜式氧合器中氧传质系数的简单分析表达式。