包交换基本服务
BPSS Basic Packet – Switching Service
基本磁盘操作系统
basic disc operating system
BDOS Basic Disc Operating System
基本磁盘填充系统
basic disc filling system
BDFS
基本交换机无线电话业务
BETRS Basic Exchange Telephone Radio Service
基本交换机远程通信无线业务
BETRS Basic Exchange Telecommunications Radio Service
无线电通信基本交换
BEXR Basic Exchange Radio
串接交换交换
tandem switching exchange
强奇异交换交换子代数
strongly singular maximal abelian self-adjoint sub
微软磁盘磁盘驱动器
microfloppy-diskette drive