理学 操作系统 释 operating system 操作系统 计算机中管理和控制硬/软件资源的系统软件，向程序和用户提供系统服务，使用户方便地使用计算机，使计算机系统高效地运行。
operating system 操作系统
系统软件 操作系统 释文 operating system, OS 操作系统
- bus and subway tickets for special group
- Busan International Film Festival
- Busan Museum
- bus arbitration
- bus bar
- Busch String Quartet
- bus communication technology of electric vehicle
- Buscot Park
- bus dispatch
- Busemann
- Busemann equation
- Busemann function
- Bush
- bush
- Bu Shaofu
- bush breaker
- Bu Shichen
- bushido
- bushing
- bushing-type condenser
- Bushire
- Bushman rock-paintings
- Bush-Mosteller model
- Bushrod Island
- Bushveld chromite deposit