采煤工艺 coal winning technology ; mining technique ; coal-mining technique ; conventional

开采工艺 mining technology ; production practice

爆破采煤工艺 blast-winning technology ; turbo charge-winning technology

钻采工艺 Drilling & Production Technology

综艺大喝采 Acclaim

综合机械化采煤工艺 fully-mechanized coal winning technology

回采工艺 extraction process ; working craft ; actual mining process

石油钻采工艺 Oil Drilling & Production Technology

普通机械化采煤工艺 conventionally-mechanized coal winning technology