flue duct positioned low pressure feed-water heater
in duct electric heater
Conjugation site of the common bile duct and the main pancreatic duct and duodenal wall
Stones straddling between the cystic duct and the common bile duct
180° curved duct with rectangular cross-section
Accessory hepatic duct injury
accessory pancreatic duct
Adiabatic Pneumatic Duct
aerothermodynamic duct athodyd
aerothermodynamic duct athodyd ：ramjet athodyd
air conditioning duct system