Soundabsorption and insulation is the acoustical characteristic of material. Measurement of soundabsorption 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。
2
With light, small coefficient of thermal conductivity, soundabsorption performance is good, not burning, the chemical stability is good wait for a characteristic.