extractionn.抽出；拔出；抽出物；血统extraction of pus抽脓Extraction memory录取存贮器extraction factor萃取[提取]因数,种实百分率Extraction methed提取方法extraction effect抽取效应Extraction scheme提取方案extraction of tea茶叶提取物extraction region采空区extraction of oil[经] 开采石油extraction heater抽汽加热器