名词
中文翻译：自记录单元
同义词：
['self-recording device', 'self-recording system']
例句：
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1. The self-recording unit is used to capture audio data for analysis.
自记录单元用于捕捉音频数据进行分析。
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2. The self-recording unit is a crucial component of the recording system.
自记录单元是录音系统的关键组成部分。
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3. The self-recording unit has been upgraded to support higher quality recordings.
自记录单元已被升级，以支持更高质量录音。