(landing gear Undercarriage) is a device ud to support the aircraft in the lower part of the aircraft for takeoff and landing (or water surface) and for the moving of the ground (or surface). The la
(landing gear Undercarriage) is a device ud to support the aircraft in the lower part of the aircraft for takeoff and landing (or water surface) and for the moving of the ground (or surface).宪法进校园 T