固定频率源可以在在通讯系统和雷达系统中作为本机振荡器，也可以作为数字电路的基准时钟信号，因此得到了广泛的应用。
Single frequency source is usually used as local oscillator in communication system and radar system, also as a reference clock in digital circuits, so it is a extensive-applied technique.
在时钟产生电路中，选择了RC振荡电路作为系统提供时钟源的方案。
In clock generating circuit, we choose rc oscillation circuit as clock scheme to supply system clock source.
本文报导了一个由正弦振荡气源、换能器组成的测量系统。
A measuring system consisting of the sinusoidal oscillation air supply and the transducer in connection with respiratory system of man or animal is presented.
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