平峒 meaning in English
adit
Examples
- Tbm roadway ripping machine used in adit construction
岩巷掘进机在平峒施工中的运用 - An almost horizontal entrance to a mine
平峒通往矿井的几乎水平的入口 - High accuracy through survey at adits of main and auxiliary shafts in tashan coalmine of datong coal industry group
同煤集团塔山矿主副井平峒高精度贯通测量