sound absorption effectiveness的用法和樣例：
例句
- The sound absorption coefficient of the material was tested by standing wave tube method.
采用駐波管法測試材料的吸聲系數。 - There are some parameters that influence the multilayer microperfrated structure, which make acoustic impedance and absorption cofficient to compute complicatedly.
摘要影響雙層微穿孔結構的參數很多，其聲阻抗及吸聲系數的計算復雜。
