counter-flap hinge[木] 背合铰链
flap hinge rolled轧制桌子加固带
Drivable flap hinge发明名称
corneal flap hinge角膜瓣
back flap hinge明铰链
ack flap hinge明铰链
back-flap hinge[建] 明铰链
flap hinge forged锻制桌子加固带