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POWER-DRIVEN DEVICE BUILT ON A STRUCTURE, PARTICULARLY VEHICLE WICH HAS NOT GOT ANY WING, FOR LIFTING, HOVERING, HORIZONTAL MOVING AND SINKING OR LANDING ON GROUND OR WATER SURFACE
POWER-DRIVEN DEVICE BUILT ON A STRUCTURE, PARTICULARLY VEHICLE WICH HAS NOT GOT ANY WING, FOR LIFTING, HOVERING, HORIZONTAL MOVING AND SINKING OR LANDING ON GROUND OR WATER SURFACE
