名词
中文翻译：声频电报
同义词：
['voice frequency telegraphy', 'voice frequency teletype']
例句：
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1. Voicefrequency telegraphy is a method of transmitting speech signals over telephone lines.
声频电报是一种通过电话线传输语音信号的方法。
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2.Voice frequency telegraphy has been used to transmit audio signals over long distances.
声频电报已被用来在长距离上传输音频信号。
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3. Voice frequency telegraphy is a complex technology that requires specialized equipment and expertise.
声频电报是一项复杂的技术，需要专门的设备和专业知识。