地铁吸音材料
noise absorbent material of metro
环保吸音材料
eco-sound absorbable material
减振吸音
noise absorbing and damping
建筑吸音材料
architecture sound absorbable material
结构的音吸收
structure-borne sound absorption
吸音材料
acoustical material
damping material
acoustic absorbing material
acoustic material
sound absorbing material