片语
system residence disk系统常驻盘
shared read-only system residence disk共享只读系统常驻磁盘
system magnetic disk系统磁盘
conversation monitor system system disk会话式监督系统系统磁盘
System Enhancements Disk系统增强程序
brake system&disk brake煞车系统
system floppy disk系统软盘
system hard disk系统硬盘
file system and disk layout文件系统和磁盘布局