短語詞組短語resonance sound -absorbing structure 共振吸聲結(jié)構(gòu)sheet resonance sound -absorbing structure 薄板共振吸聲結(jié)構(gòu)sound -absorbing material with composite structure 復(fù)合結(jié)構(gòu)吸聲材料 返回 sound absorbing structure