downward ventilation
英 [ˈdaʊnwəd ˌvɛntɪˈleɪʃən]
美 [ˈdaʊnwərd ˌvɛntəˈleɪʃən]
网络 向下通风; 下向通风; 下行通风
双语例句
- However, when the fire happens, the downward ventilation can often cause the air disorder and air inversion easily.
但下行通风在发生火灾时往往会引起风流紊乱，容易造成风流逆转。 - The results of the gas outburst simulation experiments showed that there was no difference in an air-flow reverse phenomenon in air inflow roadway between the upward ventilation and downward ventilation when the seam angle is ranging from 0 to 32 °.
煤层倾角在0~32°内变化，突出瓦斯相似模拟实验结果，看不出上行风和下行风对进风平巷风流逆流现象有何差别。 - Practice and Exploration of Downward Ventilation Technique
下行通风技术的实践与探讨 - The stope downward ventilation technique has been used under different conditions in many places of our country.
回采工作面下行通风在我国许多地方的不同条件下均有使用。 - Makes an analysis on the picture of the plume of automobile emission by the method of flow visualization, proves the invalidity of the downward extracting ventilation system for underground parking garages. Makes some advice for exhaust methods of automobile emission in underground parking garages.
运用流动显示的方法，对得到的汽车尾气的烟羽图片进行分析，证明现有下排风停车库通风系统的不合理性，对地下停车库汽车尾气的排风方法提出了建议。 - Research on application of downward ventilation to coal mining face in horizontal seam with coal outburst in potential
近水平突出煤层回采工作面下行通风应用研究