理学 元模型体系结构 释 object constraint language; OCL 对象约束语言 一种形式化的模型描述语言。用于描述统一建模语言（UML）模型的细节，既是UML规范的组成部分，也可视为一种独立的语言。
软件工程 释文 object constraint language, OCL 对象约束语言
- principal idempotent
- principal idempotent element
- principal identity
- principal indecomposable module
- principal indecomposable representation
- principal integral domain
- principal integral representation
- principal invariant
- principal isotope
- principal isotropy group
- principalization
- principal lattice element
- principal leadership
- principal left ideal
- principal left ideal ring
- principal line
- principal line of photograph
- principally analytic set
- principally polarized variety
- principal mapping
- principal matrix
- principal maximum
- principal measure
- principal minimum
- principal minor