名词
中文翻译：Unknown
同义词：
['double-layered recording', 'double-layered audio', 'dual-density recording']
例句：
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1. The new double-densityrecording technology promises to improve sound quality significantly.
新的双层密度录音技术承诺将显著提高音质。
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2. The engineer used a double-density recording to capture the delicatesounds of nature.
工程师使用双层密度录音捕捉了大自然的微妙声音。
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3. The double-density recording is essential forpreserving historical documents.
双层密度录音对于保存历史文献至关重要。