The electro optic sampling system constructed with the multiple frequency phase shift scanning method was introduced.

分析了倍频移相扫描法的工作原理,介绍了用倍频移相扫描法构成的电光采样测量系统.

互联网

A new - style audio remote tripper is presented, which adopts DTMF ( Dual Tone Multiple Frequency ) technology.

提出了一种新型的 、 用双音频编码实现的音频远方跳闸装置.

互联网