名词
中文翻译：直音器
同义词：
['direct tuner', 'straight-tuned instrument']
例句：
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1.The new music system has a built-in straight tuner that makes tuning easy.
这款新型音乐系统内置直调器，让调音变得简单。
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2. The musician used a straight tuner to adjust the pitch of his guitar.
这位音乐家使用直调器调整了他的吉他音准。
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3. The concert hall had a straight tuner installed to ensure uniform sound quality throughout the venue.
音乐会厅安装了直调器，以确保整个场馆的声音质量保持一致。