The acoustical properties of compound impedance in a double layer sound absorbing structure is studied,Base on that,A model is constructed to optimize the double layer structure.是什么意思_The acoustical properties of compound impedance in a double layer sound absorbing structure is studied,Base on that,A model is constructed to optimize the double layer structure.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句