短語詞組短語synthesis mining coal mechanization 綜合采煤機(jī)械化Compound mining mechanization 綜采機(jī)械化coal mining mechanization 采煤機(jī)械化mechanization mining 機(jī)械化采掘comprehensive mechanization mining face 綜采工作面upscale ordinary mechanization mining 高檔普采fully mechanization mining 綜放開采fully mechanization mining equipment 綜放設(shè)備system mechanization mining 綜放開采 返回 mining mechanization