upward ventilation
upward ventilation是什么意思、upward ventilation怎么读
读音：[ˈʌpwəd ˌvɛntɪˈleɪʃən]
[ˈʌpwərd ˌvɛntəˈleɪʃən]
upward ventilation 基本解释
网络 向上通风; 上向通风
重点词汇
- upwarda. 向上的 adv. 以上
- ventilationn. 通风, 空气流通, 公开讨论 [医] 通风, 换气
upward ventilation 双语例句
- 1、
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。