总传质系数，根据双膜理论，对于气液相传质体系，采用两相主体的浓度的某种差值表示总推动力而写出传质速率方程中的系数。
测定了不同气速和液速条件下的总传质系数。
The overall mass transfer coefficients were tested at various gas and liquid flow velocities.
结果表明：吸附温度升高时，总传质系数减小，吸附带长度增大。
The results show that overall mass transfer coefficient (decreases) but length of adsorption zone increases with an increase in adsorption temperature.
文章计算了吸附柱的传质区高度和总传质系数，为放大设计奠定了基础。
The calculation of height of mass transfer zone and total mass transfer coefficient of adsorption column provides a basis for the design of size-enlarged plant.
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