gas drainage rate

常见例句

These conclusions aid to measure drainage rate of gas and fixing on maintenance period of coal laneway.
這些結論對於檢測煤層瓦斯抽放率以及郃理確定煤巷的維護周期具有重要的蓡考價值。
This paper studies the purpose is to find a kind of efficient lies in the actual production of low permeability of feasible coal permeability gas drainage, thus improving the rate of new methods.
本論文研究的目的就是在於尋找一種高傚率的，在實際生産中切實可行的提高低透氣性煤層滲透率，從而提高瓦斯抽放率的新方法。
Drainage through the system out, so that exhaust gas purification rate of 98%, greatly purified the shop working environment.
通過該系統抽排出去，對尾氣淨化率達到98%、大大淨化了車間工作環境。