理学 协同社交系统 释 open source 开源软件 在软件发行时附上允许用户更改、自由散布或衍生著作的源代码，即授权可以公开使用源代码的软件。
软件工程 释文 open source 开放源码
- OA
- OAF
- Oahu Island
- OAIS
- OAI元数据获取协议
- oak
- oak ferns
- oak forest
- oak in Putuo Mountain
- Oakland
- Oakland Museum of California
- oakleaf goosefoot
- oak leaf poisoning
- Oak Ridge
- Oak Ridge National Laboratory
- O. A. Ladyzhenskaya
- O. A. Ladyzhenskaya (1922—2004)
- OANA
- OAO
- OAO-3
- oarfish
- oar from Hemudu
- Oars for the Boat of Art
- OAS
- oasis