A search crew sent out emergency signals but there wasn't any answer.
搜查人员发出紧急信号但是却没有收到任何回答。
Three life jackets and survival equipment, including an emergency beacon, were found on board, but no life rafts.
在甲板上发现了三件救生衣及一些救生设备，包括一个紧急信号灯，但是没有发现救生筏。
emergency position indicating radiobeacon signals
紧急无线电示位标信号
The destroyer was winking urgently.
驱逐舰正紧急地发着灯光信号。
Acoustics-Audible emergency evacuation signal
GB/T12800-1991声学紧急撤离听觉信号
The ship is sinking , and I have to send a SOS.
船要沉了，我不得不发出紧急求救信号。
Place additional information here, such as emergency phone numbers.
这里用于放置其他信息，例如紧急电话号码。
In emergency, an electrical signal could be sent, and the dolphin could be killed by the explosive charge.
情况紧急时,就可发出电子信号用炸药炸死海豚.
Drove vehicle, operated flood lights, and placed flares during power failure or emergency.
开车、探照灯、停电或紧急时放置信号火焰。
When the fire alarm rang we assembled outside the emergency exit.
当火警信号响起时，我们都聚集到紧急出口外。
When the emergency appears, starting the stretching wire switch at any position of accident spot can send out the stop signal.
当紧急事故发生时，在现场任意处启动拉绳开关，均可发出停机信号。
Ad hoc Working Group on Emergency Telecommunications
特设紧急电信工作组
hand-powered emergency transmitter
手摇供电式紧急发信机
emergency opening in central medium
路中央分隔栏紧急信道
emergency beacon
紧急救援无线电信标
emergency locator radio transmitter
紧急定位无线电信标
Oh, never mind. It can wait .
噢，不要紧，那封信不急。
EMATS (Emergency Message Automatic Transmission System)
紧急信息自动传输系统