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Airborne monitoring system of large freight unmanned aerial vehicle
Sectional type cockpit of biplane for emergency rescue
Turboprop engine power device for single-engine double-wing aircraft
Wing protection device and protection method for biplane
Spreading equipment for agriculture and forestry operation based on biplane
Universal anti-collision process trolley for rail wagons
Cage type AUV (Autonomous Underwater Vehicle) active recovery device
Bearing process trolley device for automatic coating line of whole railway wagon
Express movable side wall boxcar with large side opening door