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磁盘操作系统 cípán cāozuò xìtǒng
IT	disk operating system
met.	disc operating system
mil., air.def.	disc operation system
proj.manag.	MS-DOS
space	operating system
telecom.	disk operation system; disk-based operating system
Tektronix 磁盘操作系统
el.	Tektronix disk operating system
Zilog 磁盘操作系统
el.	Zilog disk operating system
IBM 磁盘操作系统
telecom.	IBM disk operating system
计算机磁盘操作系统 cípán cāozuò xìtǒng
auto.	disk operating system
磁盘操作系统简写为DOS cípán cāozuò xìtǒng
dat.proc.	disk operating system

磁盘操作系统: 70 phrases in 7 subjects

Aviation	3
Electronics	42
Information technology	11
Multimedia	1
Project management	2
Space	4
Telecommunications	7