狭窄段 meaning in English

narrow

Conclusions the key of the surgical treatment of the intrahepatic calculus include incision and exposure of the stricture of the intrahepatic bile duct , removing the stone and reconstructing bile drainage
结论复杂肝内胆管结石外科治疗的关键是显露和切开肝内各叶段胆管的狭窄段，取出结石、建立通畅的胆流通道。
Thirdly , there are many river bends and shoals in the inner mongolia reach . ice flood will occur in these places at the break - up time . it is valuable and meaningful to make factor analysis for ice flood and model research for freeze - up time and break - up time
第三，内蒙段成几字型大弯曲，其间浅滩弯道叠出，坡度变缓，逶迤曲折，河中多夹心滩，分流窜沟，解冻开河时，常在河道的曲湾或山宽变窄的狭窄段产生凌汛。
Methods between 1992 and 1998 , 35 patients were admitted for complex intrahepatic biliary calculi . patients undergone biliary lithotomy by multiple incision made on the bile duct strictures disseminating on different hepatic lobes and segments , hence the exposure of the strictured duct and the bile ductplasty after the cholangiotomy was the major challenge
方法总结分析1992 - 1998年外科治疗复杂性肝内多段胆管结石并多处胆管狭窄35例的手术方法，总结显露与切开肝内狭窄段胆管、取出结石、解除狭窄的经验和体会。