external diffusion control 外扩散控制 ; 外廓张节制
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 adsorption process in the experimental conditions can be considered as external diffusion control.
认为实验条件下的吸附过程属于外扩散控制。
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