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
- News literacy
- news magazine
- news map
- news media
- news media management
- News media operation model
- News Media Orientation
- news methodology research
- NewsML
- news moral
- news morality
- New Social history
- new socialist countryside
- New Social Movements
- New Society Movement
- new sociology of education
- News of Churches
- News of the Country
- News of the World
- New Solar Telescope
- News Ombudsmanship
- New Songs from a Jade Terrace
- New Sounds of Qin
- New South Wales Corps
- New South Wales, State of