声响信号 aural signal ; [通信] Audible Signal ; acoustic signal ; akustisches Signal
声响信号器 sound signalling device ; acoustic signalling system
声响信号器材 sound signalling appliance
雾航声响信号 fog alarm
声响信号装置 sound signalling
声响信号器具 sound signalling appliance
压缩空气声响信号 compressed air sound signal
声响信号方式 acoustical signaling
声响信号发生器 Sound signalling devices
电子声响信号应答器 electronic aural responder
一听到发动机声响，就探出窗外，利用镜子的反射打出信号。
When he heard an engine, he leaned out the window and flashed a signal.
它是由非常短的微波脉冲信号引起的结果，每一个脉冲发出一声响声。
This buzz was being caused by the train of very short pulses of microwave signal, each pulse causing a single click.
模块化船舶声响，包括15种常用信号，并支持手动功能操作简单。
Modular ship noise, including 15 kinds of commonly used signals, and Supports manual functions, simple operation.
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