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- A device used to supply a stable single-frequency signal to an up-converter or down-converter. The local oscillator signal is mixed with the information-carrying signal to change its frequency up or down. 向上变频器或下变频器提供稳定单频信号的一种设备。本机振荡器信号和信息传输信号混频,使其频率上调或下调。
- The performance of Lanczos filter and Butterworth filter was analysed based on filtering Madden-Julian Oscillation signal from long sequences. 就长序列资料的MJO滤波,分析了Lanczos滤波器与Butterworth滤波器的滤波性能,结果表明: 1)在滤波器参数n足够大时,Lanczos滤波器对MJO信息的滤出和对非MJO信息的抑制均优于Butterworth滤波器;
- Except for the intraseasonal oscillations(81d and 101d),the chlorophyll concentration has also apparent interannual oscillation signal(3 a) which correlates significantly with the ENSO index(-0.28). 进一步的分析表明;台湾海峡区域平均的叶绿素含量不仅具有周期约81 d和101 d的季节内振荡信号;还具有与ENSO指数呈显著负相关(-0.;28)的周期约3 a的年际振荡信号
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- 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 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 rise in prices was a signal for rebellion. 物价上涨引起了叛乱。
- A channel over which pilot signal is transmitted. 可在其上传输导频信号的一种信道。
- 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。
- The driver is winking his lights to signal a turn. 驾驶员打着一闪一闪的灯光信号表示要转弯。
- Output from the inverting oscillator amplifier. 内部反向振荡放大器的输出。
- Everyone uncovered when the signal sounded. 信号响时，人人脱帽致敬。
- The train must stop when the signal's red. 信号机是红色时,火车必须停驶。
- A red lamp is used as a danger signal. 红灯用作危险信号。
- Send out a distress signal; the ship is sinking. 船正在下沉，发遇险信号吧。
- I corrected my watch by the time signal. 我按报时信号校正我的表。
- The oscillator hunts about the correct frequency. 振荡器在正确的频率附近搜寻。
- A decrease in signal power as measured between two points. 信号能量在两点间测量出来的减小量。参阅signal。
