ductusn.<拉>导管ductn.管道；导管vt.用导管输送ductility test延展试验,延性试验duction process生产过程比例性,分批生产法,生产过程ducts secretory[医] 分泌管duct mud-jack孔道压浆ductus biliaris胆总管ductility point流限； 屈服点Ductility index延性系数duct of Botallo动脉导管ductus renuiens结合管, Hensen管duct of cochlea蜗管