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.
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。
Rotation of the fiber bundle increases the relative velocity between the fluid and the hollow fibers and increases the mass transfer.
该纤维束的旋转增加了所述流体与所述中空纤维之间的相对速度，并且提高了所述物质传递。
The effect of electric field strength and two phase velocity on mass transfer characteristics in the separation process was studied in an electro-extraction equipment.
在自行设计的连续电泳萃取池内实验研究了电场强度、两相流速等因素对丁醇萃取率及传质通量的影响。
The results show: external diffusion is control process for mass transfer, and increasing air velocity and decreasing particle diameter are effective measures to decrease mass transfer resistance.
研究结果表明：外扩散过程是传质的控制步骤，增大风速、减小吸附剂颗粒直径是减少传质阻力的有效措施。
The results show: external diffusion is the main resistance for mass transfer, and increasing air velocity and decreasing particle diameter are effective measures to decrease mass transfer resistance.
研究结果表明，外扩散过程是传质的主要阻力，增大风速、减小吸附剂颗粒直径是减少传质阻力的有效措施。
Hydrodynamics and mass transfer of triplet loop biological fluidized bed reactors were studied in terms of gas holdup, liquid circulation velocity and volumetric mass transfer coefficient.
从气相含率、液体循环速度和体积氧传质系数方面研究自行设计新型结构的三重环流生物流化床的流体力学与传质特性。
The mass transfer coefficient is directly proportional to the cube root of feed velocity.
传质系数与废水流速的立方根成正比；
So the rate of mass transfer can be intensified by reducing the particle diameter and increasing the gas and liquid velocity.
要强化传质，除了增加气液流速外还可以减小颗粒度。
The test results indicate that operation at high flue gas velocity improves the mass transfer effectively, increases SO 2 removal efficiency significantly and decreases gas liquid ratio.
结果表明，提高吸收塔烟气流速可强化传质过程，显著地提高脱硫率，同时减小液气比。
The test results indicate that operation at high flue gas velocity improves the mass transfer effectively, increases SO 2 removal efficiency significantly and decreases gas liquid ratio.
结果表明，提高吸收塔烟气流速可强化传质过程，显著地提高脱硫率，同时减小液气比。
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