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
- pilocarpine
- pilose antler
- pilot
- pilotage
- pilot and engineer training system of aircraft materiel
- pilot atlas
- pilot bit
- pilot certificate training
- pilot demonstration area of socialism with Chinese characteristics
- piloted
- pilot experiment
- pilot-heading excavating method
- pilotherm
- pilot hole
- pilothouse
- pilot induced oscillation flight test
- piloting
- piloting technician
- pilotless
- pilot medical selection
- pilot operation procedure
- pilot plant tests
- pilot program in integrated community-based DRR（Disaster Risk Reduction）
- pilot project
- pilot protection for distribution lines