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
- ascaridole
- ascarisin
- ascarisin; scaridole; 1,4-peroxi-do-p-menthene-2
- ascaris lumbricoides
- ASCE
- Ascella
- ascend
- ascendant
- ascendant continued fraction
- ascendant subgroup
- ascending
- ascending and descending，floating and sinking
- ascending branch
- ascending central series
- ascending chain
- ascending chain condition
- ascending chain condition for left ideals
- ascending development method
- ascending difference
- ascending earth station
- ascending factorial
- ascending ideal series
- ascending induction
- ascending node
- ascending normal series