annunciator
【机械工程】号牌（信号器圆盘、呼叫吊牌、呼叫圆盘）
annunciator drop (annunciator disc, calling drop, calling disc)
暂无补充释义。
annunciator drop (annunciator disc, calling drop, calling disc)
暂无补充释义。
annunciator
annunciator
annunciator relay【电】;indicating relay【电】;signal relay【电】
annunciator boards
annunciator relay
modular quadruple point annunciator
modular single point annunciator
semigraphic annunciator