常見例句Keywords bolt;roadway;actual mingin roadway; 錨桿;巷道;沿空留巷;ANALYSIS OF THE CHARACTERISTIC OF THE MINERAL SURROUNDINGS IN DENGMAYING LAKEBEACH OF MINGIN COUNTY, GANSU 甘肅民勤鄧馬營湖灘地地質(zhì)環(huán)境條件分析data mingin 數(shù)據(jù)挖掘 返回 mingin