Audible Signals: Alarms, Bells, Buzzers, Horns, and Sirens, Electronic, Shipboard
声音信号:警报、铃声、蜂鸣器、喇叭和警报器、电子、船上

2016-04-12

AUDIBLE SIGNALS: ALARMS, BELL, BUZZERS, HORNS, SIRENS, AND ELECTRONIC, SHIPBOARD
声音信号:警报、铃声、蜂鸣器、喇叭、警报器和船上电子设备

2019-11-12

AUDIBLE SIGNALS: ALARMS, BELL, BUZZERS, HORNS, SIRENS, AND ELECTRONIC, SHIPBOARD
音响信号:警报器、铃声、蜂鸣器、喇叭、警报器和电子设备 船上

2020-04-28