改良的Clavien分级系统
Modified Clavien classification system
病理分级分期
Pathological grading and staging
不分级领域间之路径
Classless Inter-Domain Routing (CIDR
层次分级的网络体系结构
HNA Hierarchical Network Architecture
层次分级的文件系统
HFS Hierarchical File System
次级不分离
secondary non disjunction