The characteristics of the wedge is that the high sound-absorptioncoefficient remains under the high water pressure.
此种尖劈的突出特点是在高压下仍保持高的吸声系数。
2
It found that the graphite changed the density of the coating, and improved the sound-absorptioncoefficient of the coating.
试验结果表明，石墨改变了涂层的密度，提高了涂层的吸声系数。
3
In the measurement of soundabsorptioncoefficient in random incidence and determination of sound power levels of noise sources, the reverberation room is used very extensively.