ORB=omnidirectional radio beacon 全方向无线电信号
ORB 全称：Observatoire Royal de Belgique。比利时皇家天文台
系统软件 中间件 释文 object request broker, ORB 对象请求代理
- open form
- open formula
- open fuel cycle
- open function
- OpenGL
- OpenGL图形编程接口
- open government data
- open-graded asphalt mixtures
- open graphics library
- Open Graphics Library graph programming interface
- open graphics library, OpenGL
- open gravel pack completion
- open grid services architecture
- open grid services architecture, OGSA
- open growth system
- open half-line
- open half-plane
- open half-space
- open hearth furnace
- open hearth steelmaking
- open hemisphere
- open herding
- openhole cavity completion technology
- open hole completion
- open hole test