windpipe,chest cavity

批发进口pu气管 气动软管聚氨酯气管耐高压气动软管8*5弹簧管
windpipe freestyle
windpipe 气管 10. vocal cord 声带 11. cavity 腔 12.
trachea pneumatic hose pvc windpipe air compressor windpipe 8mpu
专利us20050257662 - saxophone windpipe structure