词汇	flap n
释义	flap n. 激动
随便看	sound-absorbing material sound absorbing materials sound-absorbing materials sound absorbing object sound-absorbing object sound absorbing paint sound-absorbing paint sound-absorbing panel sound-absorbing partition sound absorbing performance sound-absorbing porous material sound-absorbing property Sound absorbing structure sound-absorbing structure sound absorbing surface sound absorbtion sound-absorbtion material sound absorbtive sound absorotion sound absorption sound-absorption sound absorption and noise reduction sound absorption apparatus sound absorption area sound absorption characteristic