noise reduction coefficient meaning in Chinese
减噪系数
降低噪系数
降声系数
降噪系数
噪声降低系数
Examples
- The result shows that average absorption coefficient and noise reduction coefficient separately equal to 0 . 58 and 0 . 60 , and fine property of sound absorption at middle - low frequency
结果表明材料的平均吸声系数和降噪系数分别达0 . 58和0 . 60 ，且材料的中低频吸声性能优良。