文学 计算语言学 释 Chomsky hierarchy 乔姆斯基层级 A.N.乔姆斯基（Avram Noam Chomsky，美国，1928～ ）划分排序的四类形式语法。
Chomsky hierarchy 乔姆斯基分层
理论计算机科学 形式语言与自动机 释文 Chomsky hierarchy 乔姆斯基谱系
- unit normal
- unit normal vector
- unit of a field
- unit of a group
- unit of a lattice
- unit of an adjunction
- unit of an adjunction of functors
- unit of an algebra
- unit of angle
- unit of area
- unit of a ring
- unit of a symmetric matrix
- unit of a vector lattice
- unit of evolution
- unit of exposure
- unit of fire safety management system
- unit of fit
- unit of geological mapping
- unit of length
- unit of translation
- unit of volume
- unit of water discharge in ancient china
- uniton
- unit operation
- unit operator