传统的用浓度变化求通风量的公式是建立在单室通风模型上的。
Traditional solution of ventilation rates with the concentration change is based on a one room ventilation model.
为了提高轴流通风机的效率和降低噪音，用复合形法对轴流通风机的气动设计进行优化。
To improve the efficiency and reduce the noise of the axial fan, Optimization is made for the pneumatically designing through Composite shape arithmetic.
串联通风是井下用风地点的回风再次进入其它用风地点的通风方式。
The series ventilation is a kind of ventilation way that the return air at the underground using wind place enters other using wind place again.
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