现代化开采技术装备
Modernized mining technology equipment
无煤柱开采技术
mining technique without coal pillar
无废料开采技术
Non waste mining technology
绿色开采技术体系
green technical system of mining
矿床(层)开采技术条件
technological condition of mining
开采技术条件
mining technical condition
Mining technology condition
mining technology
开采技术界限
exploitation technology limit
开采技术方案
mining technology project
开采技术
mining technology
Exploitation technology
mining
Recovery technique
recovery technology
production technique
Exploitation techniques
exploit technology
production technology
mining technique
Technical principle guideline
Technology for production
pumping technique
集中化开采技术
Integrated mining technology