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
- unsafe
- unsafe behavior
- unsafe condition
- unsafe events in flight test
- unsafe factor
- unsafe factors of road transportation
- unsalable books
- unsatisfiability
- unsatisfiable
- unsatisfiable set of formulas
- unsaturated
- unsaturated basin
- unsaturated bond
- unsaturated bond of mineral surface
- unsaturated color
- unsaturated fatty acid
- unsaturated fatty acids
- unsaturated flow
- unsaturated gain
- unsaturated groundwater flow
- unsaturated helium film
- unsaturated hydraulic conductivity
- unsaturated hydrocarbon
- unsaturated hydrocarbon complex
- unsaturated hydrocarbon coordination compound