... ventilation trachea 释义：换气气管 ventilation quantity 释义：通风量 ventilation function 释义：通气功能 ...
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The density control of gas and coal dust is done through optimal allotment of the ventilation quantity in the coal mine well.
煤矿井下瓦斯和煤尘的浓度控制是通过煤矿井下通风量的优化分配实现的，是实现煤矿安全生产的关键环节。
A proposal for control of airflow in a mine fire is proposed by optimization of air quantity in a ventilation network.
提出了用通风网络风量优化计算的方法求解矿井火灾时期的风流控制方案。
The Face ventilation systems and airflow quantity influence the goaf gas emission to a considerable extent. This influence is quantitatively analysed by means of model experiment.
工作面通风方式和风量对采空区沼气涌出量的影响不容忽视，作者通过模型实验对这种影响进行了定量分析。
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