extractionn.抽出;拔出;抽出物;血统
extraction yield萃取率
extraction curve萃取曲线
extraction valve抽汽阀
extraction point抽汽口
extraction shell提取筒壳
Extraction rules抽取规则
extraction drill抽采钻孔
extraction steam抽汽
extraction drift回采平巷
extraction croft提取工艺