自动火警警报系统
automatic fire alarm system [AFA system
automatic fire alarm system
自动报火警系统
automatic fire-alarm system
automatic fire detection system
综合预警报警系统
Integrated alarm management system
贝尔系统电传打字机交换服务
Bell system teletypewriter exchange service
差分双工电报系统
differencial duplex telegraphic system
磁层-电离层系统(MI系统)
Magmetosphere-Ionosphere(MI) system
地质资料电脑系统
geological data computer system
电传打字微电脑系统
teletype microcomputer system