bdos basic disc operating system

基本磁盘操作系统  detail>>

disc operating system

磁盘操作系统  detail>>

dos disc operating system

磁盘操作系统  detail>>

dp disc operating system

磁盘操作系统  detail>>

floppy disc operating system

软盘操作系统  detail>>

hard disc operating system

硬磁盘操作系统  detail>>

scientific disc-operating system

科学磁盘操作系统  detail>>

tape disc operating system

磁带磁盘操作系统  detail>>

bdos basic element

基本元件  detail>>

basic disk operating system

基本磁盘操作系统  detail>>

basic operating system

基本操椎统 基本操作系统  detail>>

basic operating system (bos)

基本操作系统  detail>>

basic operating system software

基本操作系统软件  detail>>

bos basic operating system

基本  detail>>

extended disc operating system，edos

延伸磁碟作业系统  detail>>

flo y disc operating system

软盘操作系统  detail>>

hdos hard disc operating system

硬磁盘操作系统  detail>>

ndos network disc operating system

网络磁盘  detail>>