名词
中文翻译：相对回响指数
同义词：
['relative echo index', 'relative reverberation index']
例句：
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1. The relative reverberation index is a measure of how well the sound waves bounce off objects in a room.
相对回响指数是衡量声波在房间内反弹效果的指标。
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2.The relative reverberation index can be used to determine the acoustic properties of materials.
相对回响指数可以用来确定材料的声学特性。
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3. The relative reverberation index is important for measuring the quality of sound recordings.
相对回响指数对于测量声音录音的质量至关重要。