1)rope guide signal,救生索信号2)general boat alarm signal,救生信号3)lifesaving signal detonator,救生信号弹4)table of life-saving signal,救生信号表5)distress signal station,救生信号站6)life signal,救生圈信号
用法例句
Since the lifesaving signal detonator is an essential marine lifesaving appliance in the merchant ships,its quality is critical to personal safety.