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- 求援信號裝置<呼吸器具佩帶者攜帶的一種手動裝置distress signal warning device
- 你可以通過無線電發出求援信號。You can send out a call for help over the radio.
- 裝置system
- 布朗裝了一部有效範圍為二百五十英里的無線電收發報機,以便查對他們的位置,還可以在萬一被迫降落時發出 sos求援信號。Brown had rigged a wireless set with a 250-mile range. With it, they could check their position and, if they were forced down, spell out an SOS.
- 信號signal
- 道路車輛。控制裝置、指示器和信號裝置用符號。修改件2Road vehicles - Symbols for controls, indicators and tell-tales; Amendment 2
- 信號裝置signal fixture
- 數字信號digital signal
- 清管器信號裝置go-devil signaller
- 發信號裝置signaling device
- 光信號裝置optical signal device
- 聲信號裝置[計] beeper
- 遠距信號裝置remote signalling
- 水量信號裝置Water flow rate measuring apparatus
- 通知信號裝置alertor
- 中央信號裝置central signal device
- 終端信號裝置terminating signaling unit
- 自動信號裝置automatic signalling
- 車內信號裝置cab singaling equipment
- 初始信號裝置initial signal unit