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 software 开源软件
- Atiyah-Bott fixed-point theorem
- Atiyah bundle
- Atiyah,Michael Francis
- Atiyah sequence
- Atiyah Singer index theorem
- Atiyah-Singer index theorem
- Atkinson
- Atkinson cycle
- Atkinson operator
- Atlanta
- Atlanta History Center
- Atlantic Charter
- Atlantic City
- Atlantic Forest Southeast Reserves
- Atlantic-Indian Basin
- Atlantic meridional mode
- Atlantic multidecadal oscillation
- Atlantic Niño
- Atlantic Ocean
- Atlantic Standard Time
- atlantoaxial instability
- atlantoaxial joint
- atlantooccipital joint
- Atlas
- atlas