无线电呼救信号 meaning in Chinese

radio distress signal

At that time the pilot of the aircraft , declared a mayday . a mayday is an in - flight emergency when the pilot figures that there is enough danger to his aircraft that he needs to go to the nearest airfield and land it in order to be safe for his crew and his airplane
当时，这架飞机的驾驶员发出了国际遇险无线电呼救信号，这种信号代表着出现了驾驶员认为飞机面临相当危险、为机组人员和飞机安全有必要飞向最近机场降落的空中飞行紧急状况。