短语词组短語horizontal cut and fill mining 水平分層充填採鑛法horizontal cut -and-fill mining 水平分層充填採鑛法upward cut -and-fill mining 上曏分層採鑛downward cut -and-fill mining 下曏膠結充填法Cut -and-fill mining method 上曏分層充填採鑛法 返回 cut and fill mining