classification systems短语¹¹⁴⁴⁶⁷⁺⁴ 基本英英例句 分类系统原型classificationsystem的复数 名词 classification system: a system for classifying things This article reviews the various classification systems and reason in bile duct injury. 本文就胆道损伤的各种分类和原因作一综述。 kns50.chkd.cnki.net