An operating system which is stored in the disk. The relevant routines are loaded from disk into main memory as required.; 存放在磁盘上的操作系统,当需要有关例行程序的时候,就从磁盘装入到主存储器中。 disk operating system (dos): 磁盘操作系统disk operating system,dos: 磁碟作业系统dos disk operating system: 磁盘操作系统; 著名软件产品dos,disk operating system: 磁盘操作系统microcomputer disk operating system(dos): 微算机磁盘操作系统下载手机词典可随时随地查词查翻译