井巷工程 meaning in Chinese

openings and development engineering
sinking and driving engineering

Terms relating to coal mining - shafting and drifting engineering
煤矿科技术语井巷工程
Specification for nonferrous metal survey
有色金属矿山井巷工程测量规程
Code for construction and acceptance of mining pit engineering
矿山井巷工程施工及验收规范
Study on ways to pass large fault in construction of sinking and drifting
井巷工程过大断层技术研究
Specifications for construction and acceptance of mine shaft and tunnel structure
矿山井巷工程施工及验收规范

More: Next