名词
中文翻译：Unknown
同义词：
['Voice Frequency Signaling Current', 'Voice Frequency Signaling Current']
例句：
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1. The device uses a voice frequency signalling current to transmit data.
该设备使用声频信号电流来传输数据。
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2. The voice frequency signalling current is used in the communication system to improve the signal quality.
声频信号电流在通信系统中被用来提高信号质量。
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3.The voice frequency signalling current has been widely used in wireless communication systems.
声频信号电流在无线通信系统中得到了广泛应用。