advancing mining
短语词组
- advancing and mining workface 采掘工作面
- advancing g mining 前进式开采
- longwall advancing mining mining 长壁式开采
- advancing coal mining 前进式采煤
- longwall advancing mining workings 长壁开采法
- longwall advancing mining stoping 长壁采矿法
- longwall advancing mining slicing 长壁分层采矿
- longwall advancing mining retreating 长壁后退式回采
- longwall advancing mining method 全面采矿法 返回 advancing mining