distress signal
短語詞組
- parachute distress rocket signal 降落傘遇險火箭信號;跳傘火箭求救信號
- red star distress rocket signal 紅星遇險火箭信號
- pyrotechnical distress signal 煙火遇險信號
- misuse of distress signal 誤用遇險信號
- smoke distress signal 煙霧呼救信號
- plant distress signal 植物求救信號
- personal distress signal unit 佩帶者不適信號裝置
- automatic distress signal 自動遇險信號
- distress signal rocket [水運(yùn)]遇險信號火箭 返回 distress signal