常見例句雙語例句Methods Use a standing wave tube to measure the sound absorption coefficient of many kinds of grain.採用駐波琯法測量了多種糧食的吸聲系數(shù)。In the present paper, the effects of EPR, blowing agent, plasticizer and rock-wool content on the sound absorption coefficient of the foamed materials were also studied and analysed…還對乙丙橡膠用量、增塑劑用量、發(fā)泡劑用量和巖棉用量對材料吸聲性能的影響做了研究。The porosity and thickness affect markedly on the sound absorption property of Al-Si closed-cell aluminum foam: the sound absorption coefficient increases along with increasing porosity;鋁矽閉孔泡沫鋁的孔隙率和厚度對其吸聲性能影響顯著：吸聲系數(shù)隨孔隙率增加而增加； 返回 sound absorption coefficient