安全信号 meaning in English

safety signal
safetysignal

My safe word will be whiskey
我的安全信号是“灰士忌” 。
Okay , the security feed ' s looped
好了,安全信号回路了
System safe signal
系统安全信号
Railway fixed equipment . procedure for the establishment of safe signalling circuit diagrams
铁路固定设备.制定安全信号设备图的程序
Safety colours and safety signs - classification , performance and durability of safety signs
安全颜色和安全信号.安全信号的分类特性和持久性

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