理学 系统软件 释 system software 系统软件 计算机系统中提供系统级平台服务功能的软件集合，其处于整个计算机软件层次中的底层，最靠近硬件，负责控制计算机和外部设备，向上层软件提供某一类共性的功能支持，支持应用软件的开发和运行。
system software 系统软件
系统软件 释文 system software 系统软件
- terrestrial simulation by space radiation environment
- terrestrial space
- terrestrial space, near-earth space
- terrestrial stereoscopic photography
- terrestrial surface radiation
- terrestrial survey
- terrestrial system of ethnicity
- terrestrial telescope
- terrestrial television
- terrestrial tides
- Terrestrial Time
- terrestrial time
- terrestrial TV set-top box
- terrestrial vegetation
- terricole
- terrigenous argillaceous rocks of coal measures
- terrigenous clastic
- terrigenous clastic rock of coal measures
- terrigenous shelves and shallow sea system
- terrisom crime
- terristrial facies
- Territoire Militaire des Pays et Protectorats du Tchad
- territorial airspace
- territorial behavior
- territorial behavior of livestock