The most important acoustical property is the sound insulating or absorbing quality of the material.
最重要的声学特性是隔音或吸音材料的质量。
2
Sound absorption and insulation is the acoustical characteristic of material. Measurement of sound absorption and insulation has an important significance in noise control and acoustical design.
吸声与隔声是材料的声学特性，吸声与隔声测量对噪声控制与声学设计具有重要意义。
3
The beautiful sound acoustical engineering devotes to the architectural acoustics space design, and provides the acoustic material and the installment construction Specialized company.