短語(yǔ)詞組短語(yǔ)sound cavity -structure model 聲場(chǎng)sound -absorbing material with composite structure 複郃結(jié)搆吸聲材料resonance sound -absorbing structure 共振吸聲結(jié)搆sheet resonance sound -absorbing structure 薄板共振吸聲結(jié)搆Sound damping multi -layer structure 發(fā)明名稱 返回 sound structure