【医】 卵巢冠纵管

blockage and oppression in the chest and stomch duct

pipe elbow, duct bend

Laparoscopic common bile duct exploration

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

canalis nasolacrimalis【解剖】;ductus nasolacrimalis【解剖】;nasal duct【解剖】

Sperm duct

ductus thyroglossalis【解剖】;thyroglossal duct【解剖】

calculus of common bile duct,choledocholith