短語詞組短語synthesis mining coal mechanization 綜郃採煤機械化Compound mining mechanization 綜採機械化coal mining mechanization 採煤機械化mechanization mining 機械化採掘comprehensive mechanization mining face 綜採工作麪upscale ordinary mechanization mining 高檔普採fully mechanization mining 綜放開採fully mechanization mining equipment 綜放設備system mechanization mining 綜放開採 返回 mining mechanization