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- A minimum point in a wave or an alternating signal. 波谷波或交错信号的最低点
- SYNCHRONOUS DATA COLLECTOR FOR MULTI-CHANNEL ALTERNATING SIGNAL 多路交流信号同步数据采集器
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- Signals control each section of the railway track. 各种信号控制着铁路轨道的每个部分。
- I stood watching for the signal to change to green. 我站着等待交通信号转为绿灯。
- Let's set the clock by the radio time signal. 咱们照着收音机的报时信号把钟对一对。
- A device used to convert direct current into alternating current. 反用换流器用于变直流电为交流电的仪器
- A period signals the end of a sentence. 句号表示一个句子结束了。
- A red lamp is often a danger signal. 红灯常常是危险的信号。
- A reflected signal on a communication channel. 一种在通信信道上反射回来的信号。
- The lighthouse flashes signals twice a minute. 灯塔每一分钟发出两次信号。
- The rise in prices was a signal for rebellion. 物价上涨引起了叛乱。
- The ship's radio sent out signals for help. 轮船上的无线电发出求助信号。
- The signals go to and fro at a very high but almost constant speed. 那些信号用非常快但几乎不变的速度来回传送。
- In electronics, undesirable low frequency currents interfering with a desired signal, and usually caused by a poorly screened alternating mains supply. 在电子学领域，一种不希望发生的低频电流，它干扰所要求的信号。通常这种现象是由于交流供电线路屏蔽不良引起的。
- A channel over which pilot signal is transmitted. 可在其上传输导频信号的一种信道。
- An alternating back-and-forth movement. 往复运动交互地前后运动
- The signal was picked up by a downrange radar station. 该信号被试验飞行方向之内的雷达站收到了。
- A diode rectifies alternating current. 二极管调整交流电。
- The quarterback barked out the signals. (橄榄球赛中的)四分卫厉声发出信号
