管道声学

cross-current classifier, gravity air separator, aspiration duct, inertial separator

accessory pancreatic duct【解剖】;duct of Santorini【解剖】;ductus pancreaticus accessorius【解剖】

calculus of common bile duct,choledocholith

polymorphous low-grade denocarcinoma, terminal duct adenocarcinoma

epididymal duct, ductus epididymidis(拉)

cochlear duct，scala media(拉)

papillary duct, duct of Bellini

ductus endolymphaticus【解剖】;endolymphatic duct【脊椎】