signal

At a prearranged signal the lights went out..预定的信号一发出，灯就全灭了。

She signalled, and the waiter brought the bill..她打了个手势，侍者就拿来了账单。

来自sign(n. 标记)记忆

signal processing信号处理

digital signal数字信号

digital signal processing数字信号处理

signal processorn. 信号处理机；讯息处理者

signal transmission信号传输；信号发送

digital signal processor数位讯号处理器

output signal输出信号

input signal[电]输入信号

signal analysis信号分析

signal generator信号发生器；讯号产生机

signal detection信号检测

signal to noise ratio信噪比，信号噪声比

control signal控制信号；操纵信号

speech signal语言信号，语音信号

video signal视频信号

traffic signal交通信号；交通讯号，指挥灯

audio signal声频信号；可听声信号

signal sourcen. 信号源

analog signal[计]模拟信号

electric signal电讯号

真题例句...you should be able to signal to them...CET42107.12听力题

真题例句...Learning how different cultures signal respect can help you avoid misunderstandings...CET42011.12听力题

真题例句...Were they deliberately tried to signal their rejection of her...CET42011.12听力题