advancing mining
短語詞組
- advancing and mining workface 采掘工作面
- advancing g mining 前進式開采
- longwall advancing mining mining 長壁式開采
- advancing coal mining 前進式采煤
- longwall advancing mining workings 長壁開采法
- longwall advancing mining stoping 長壁采礦法
- longwall advancing mining slicing 長壁分層采礦
- longwall advancing mining retreating 長壁后退式回采
- longwall advancing mining method 全面采礦法 返回 advancing mining