advancing mining
短语词组
- advancing and mining workface 採掘工作麪
- advancing g mining 前進式開採
- longwall advancing mining mining 長壁式開採
- advancing coal mining 前進式採煤
- longwall advancing mining workings 長壁開採法
- longwall advancing mining stoping 長壁採鑛法
- longwall advancing mining slicing 長壁分層採鑛
- longwall advancing mining retreating 長壁後退式廻採
- longwall advancing mining method 全麪採鑛法 返回 advancing mining