freezing shaft meaning in Chinese
冻结井筒
Examples
- Study on dangerous cracking depth of mine freezing shaft
冻结立井的破裂危险深度研究 - Analysis of freeze shaft wall damage in dongrong no . 3 coal mine
东荣三矿冻结段井壁破坏原因简析 - Practices of mine shaft sinking construction in deep mine freezing shaft
深厚表土层井筒冻结段施工技术 - Mine freezing shaft sinking technology for deep mine in henan coal mines
发展中的河南煤矿深井冻结凿井技术 - Issues on key technologies of freezing shaft sinking in huainan mining area
淮南矿区冻结法凿井的几个关键技术问题