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
- ionospheric eclipse
- ionospheric effect
- ionospheric HF oblique sounding
- ionospheric instability
- ionospheric irregularities
- ionospheric irregularity
- ionospheric modification
- ionospheric parameters
- ionospheric propagation of ultrashort wave
- ionospheric radio wave propagation
- ionospheric refraction
- ionospheric refraction and radio wave propagation delay
- ionospheric refraction correction
- ionospheric region
- ionospheric satellite
- ionospheric scintillation
- ionospheric sounding
- ionospheric storm
- ionospheric structure
- ionospheric topside sounding
- ionospheric vertical sounding
- ionospheric vertical structure
- ionospheric wave
- ionotropic receptor
- ionotropy