distress call apparatus

Design and realization of embedded speech recognition annunciator;

嵌入式语音识别呼救装置的设计与实现

distress frequency

无线电频率遇险呼救频率

low power distress transmitter

低功率遇险呼救发信器

marine calling and distress radio telephony frequency

海上呼叫和遇险无线电话频率

international distress radio frequency

国际呼救无线电频率

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

distress message generator

呼救信号发生器遇险电文产生器遇险信息发生器

Distress Radio Call System

遇险无线电呼叫系统

impedance respiratory frequency transducer/sensor

阻抗式呼吸频率传感器

Then the rescuers jump into the boat and are off to help those in danger.

救生员们跳进船，出发去救助那些遇险者。

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。

Emergency workers continue to search ruined buildings for victims.

救险队员仍在废墟中继续寻找遇难者。

[KJV] Howbeit he will not stretch out his hand to the grave, though they cry in his destruction.

然而人跌倒，怎会不伸手？人遇灾祸，怎会不呼救呢？

Study on ciliary beat frequency of the mucosa of bulla and upper respiratory tract in mice

小鼠中耳及呼吸道纤毛运动频率研究

The Effects of Environmental Factors on the Respiration Frequency of Platichthys stellatus

环境因子对星斑川鲽呼吸频率的影响

The shipwrecked sailors were very excited at the arrival of the rescue ship.

那些遇险的水手看到救生船的到来非常激动。

Calculation and Analysis of Stability of Pilot-rescue-equipment

飞行员遇险救护装置侧翻稳定性计算分析

Research on Equipment and Technical Requirements for Pilots in Distress Ambulance

遇险飞行员救护技术要求和装备的研究

Digital Selective Calling [Global Maritime Distress and Safety System]

数字选择性呼叫〔全球海上遇险和安全系统〕