无线电报自动警报器
radio telegraph auto-alarm
标准电源电压不足时的印刷电路板
normal source undervoltage pc card
标准电源电压监控板
normal source voltage monitoring card
测温式火警自动报警器
air temperature automatic fire alarm
automatic thermo type fire alarm
标准电动势
standard electromotive force
标准电源指示灯
normal source pilot light
标准自动数据处理系统
uniform automatic data processing system
UADPS
电动标准楔形板
electric standard cuniform board