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
- European Economic Area
- European Extremely Large Telescope
- European Federation for Information Technology in Agriculture, Food and the Environment
- European Federation of Animal Science
- European Federation of Chemical Engineering
- European Federation of Sport Psychology
- European Food Safety Authority
- European Football Championship
- European foulbrood disease
- European free-tailed bat
- European Geoscience Union
- European geostationary meteorological satellite
- European grassland
- European Gravitational Observatory
- European Group of Research and Insurance Economists
- European Higher Education Area
- European hydropower resources
- European Inland Fisheries and Aquaculture Advisory Commission
- European Journal of Agronomy
- European Journal of Control
- European Journal of Cultural Management and Policy
- European Journal of Plant Pathology
- European Journal of Soil Science
- European laboratory for particle physics
- European Launcher Development Organization