time-sharing operating system 分时操作系统
系统软件 操作系统 释文 time-sharing operating system 分时操作系统
- welding inspection
- welding material
- welding metallurgy
- welding nondestructive inspection
- welding nondestructive test
- welding of dissimilar metal
- welding of magnesium alloys
- welding of metal
- welding of superalloy
- welding qualification and certification
- welding remanufacturing
- welding robot
- welding stress
- welding thermal cycle
- welding transformer
- welding under nuclear environment
- welding wire
- welfare breeding
- Welfare centre
- welfare facilities for the disabled persons
- welfare facility room
- welfare fish separating
- welfare home for the elderly
- welfare institution
- Welfare pluralism theory