exhaust ventilation是什么意思

用法例句

The formula of calculating effective suction length of exhaust system in one ended tunnel is derived from the theory of plane flow.

应用流体平面流动理论推导独头巷道抽出式通风有效吸程计算式，并根据试验观测结果分析了影响有效吸程的因素。

Numerical simulation of distribution regularities of dust concentration during the ventilation process of coal drift driving with exhaust ventilation;

抽出式通风煤巷掘进过程中粉尘浓度分布规律的数值模拟