齿轮状呼吸音  cogged breath sound

冲基呼吸音  cogwheel breathing

地铁吸音材料  noise absorbent material of metro

多孔吸音材料  porous material

肺泡呼吸音  vesicular murmur; murmur; vesicular

共振吸音器  Helmholtz resonator

共振吸音特性  resonance sound

虹吸吸取  siphon suction

呼吸音  respiratory murmur; breath sounds; Respiratory sounds; breath sound; respiratory sound; Sound; breath

呼吸音描记器  respirophonograph

呼吸音描记图  respirophonogram

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

解吸吸附  desorption absorption

空洞呼吸音  cavernous breathing

铺设吸音面层  noise-reducing surfacing

声音吸收  absorption of sound; sound absorption