短語詞組短語double -column chromatography 雙柱色譜double rectification column [化工]雙級(jí)精餾塔double absorption column 雙吸收塔double line column 雙橫隊(duì)Double e column magazine 雙排彈匣Double -column structure 本機(jī)採用雙立柱結(jié)搆 返回 double column