... 当量颗粒直径equivalent particle diameter 有效颗粒直径effective particle diameter 最大流通颗粒largest particle passed ...
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effective diameter of soil particle [土壤] 土粒有效直径
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。
When the average diameter was different, the effective heat transfer coefficient decreased with increasing particle diameter.
当颗粒的粒径增大，有效传热系数降低；
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