Whatever it is radar, eccm equipment, communication equipment or instrument, frequency source with high stability is needed to guarantee the quality of carrier signal.
无论是雷达、电子对抗，还是通信、仪器设备等都需要高稳定度的频率源，以保证载波信号的质量。
One way to get such a signal into a human may be through use of a high frequency carrier frequency.
一种将这种信号传入人脑的方法是通过加载了高频的频率。
Modulation is the process of loading the information to be delivered onto a certain(signal carrier) signal of high frequency.
调制是将要传送的信息装载到某一高频（载波）信号上去的过程。
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