理学 系统分析模型 释 object-oriented analysis; OOA 面向对象分析 采用面向对象方法的基本思想进行系统研究的方法，即按照面向对象的思想来研究业务，包括建立系统的需求模型（用况图），确定业务问题中的对象及其对象层次（类图），运用面向对象概念进行类图各个层次的建模等，还包含具体的过程指导。
OOA=optimum orbital altitude 轨道最适高度
软件工程 释文 object-oriented analysis, OOA 面向对象分析
- Irkin
- Irkutsk
- IRLS
- IRM
- IRMA
- IRMPD
- IRNA
- Irnerius
- IRNSS
- iron
- iron and steel analysis
- Iron and steel E-commerce
- iron and steel making
- iron and steel scrap
- Iron Axle-bearings from Mianchi
- iron bacteria
- iron-based cast and wrought superalloy
- iron based cast superalloy
- iron based catalyst
- Iron based powder metallurgy material with high density
- iron based superconductor
- iron-based superconductor
- iron bath gas making
- iron binding globulin
- iron bird test of flight control system