Superficial air velocity的意思|示意

The gas holdup in the air-water system was slightly higher than in the air-paraffin system and it increased with superficial gas velocity.

结果表明：气含率随着表观气速的增加而增加。在空气-水体系中的气含率略大于空气-医用液体石蜡油-催化剂体系的气含率。

Liquid circulation rate and gas holdup in an air-lift loop reactor were experimentally investigated as changing with the superficial gas velocity for the system of air-water.

浆液循环速度是外环流浆态床反应器研究中一个重要的流体力学参数，对流体的流动行为和相间传质有重要的影响。