voice frequency pulsing
... voice frequency multi-channel carrier telegraphy ==> 音频多信道载波电报 voice frequency pulsing ==> 音频脉冲发生 voice-frequency relay ==> 音频继电器 ..
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因而本装置包括模拟量信号发生器、开关量信号发生器、串口信号发生器、脉冲信号发生器、正弦信号发生器、音频信号发生器和图像信号发生器。
Therefore, this device must design analog signals generator, digital signals generator, series signals generator, pulse signals generator, audio signals generator, and video signals generator.
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