The average absorption coefficient of the composite structures made by partt board and wooden fiberboard can increase up to 0.868, 0.862 from 0.409, 0.306.
而通过几个参数的适当搭配，槽孔板与木丝板复合结构的平均吸声系数分别由0.409，0.306最高可提高到0.868，0.862。
The result shows that average absorption coefficient and noise reduction coefficient separately equal to0.58and0.60 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。
The result shows that average absorption coefficient and noise reduction coefficient separately equal to 0.
结果表明材料的平均吸声系数和降噪系数分别达0。
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