数字频率计是直接用十进制数字显示被测信号频率的一种测量装置。
The digital frequency meter is a device which is one kind of using decimal system digital directly display the signal frequency.
介绍电流测定信号的过采样的几种方法，例如十进制滤波器等。
Several methods for oversampling of current measurement signal are introduced, for example, algorism filter, etc.
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