distress alerting and locating system
遇险信号和确定船位系统
Send out a distress signal;the ship is sinking.
船正在下沉，发遇险信号吧。
Seeing a ship on the lorizen, we ran up a flag of distress.
看到地平线上出现一只船，我们连忙升起遇险信号旗。
Mayday, mayday, mayday, rear cabin door opened in flight, explosive depression in flight deck and cabin.
遇险信号，后舱门在飞行中打开，驾驶舱、客舱急剧减压。
When the captain found the ship wassinking rapidly, he orderedhis men to send out a distress signal.
船长发现船在迅速下沉时就命令船员发了遇险信号。
" When the captain found the ship was sinking rapidly, he ordered his men to send out a distress signal."
船长发现船在迅速下沉时就命令船员发了遇险信号。
parachute distress rocket signal
降落伞遇险火箭信号
Stranded and in trouble, the crew sent out the S.O.S.
船搁浅遇险后，船员立刻发出求救信号。
distress message generator
呼救信号发生器遇险电文产生器遇险信息发生器
An international radiotelephone signal word used by aircraft and ships in distress.
呼救信号遇险的飞机、船只等使用的国际无线电呼救信号
I took my rescue team up as soon as we received their distress signal.
我们一接到他们遇险的信号，我就带着我的营救队上去了。
It is the simplest signal to make, in time of danger or disaster.
这是在遇到危险或灾难的时候能发出的最简单的信号。
distress-calling auto-sender
遇难信号自动发送器
low power distress transmitter
低功率遇险呼救发信器
When a vessel or installation in the vicinity of the scene of an accident receives a distress signal or discovers that people's lives are endangered,
事故现场附近的船舶、设施，收到求救信号或发现有人遭遇生命危险时，
sound a note of alarm/danger/warning
发出警报[危险信号/警告信号]
A red light is usually a signal of danger.
红灯通常是危险的信号。
Beacon Explorer
“信标探险者”号卫星