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Petrol-electricity hybrid multi-rotor unmanned aerial vehicle
Charging control system and method of rechargeable battery and vehicle
Lifting appliance device for overhauling converter station
Low-voltage battery charging control system and method
Grid wing control-surface-free high-maneuverability tailstock type aircraft
Locking device for battery assembly and electric automobile
SUPPORT APPARATUS FOR PODDED PROPULSOR, AND PODDED PROPULSOR
SLEWING CONTROL MECHANISM, BRAKE DEVICE, POD PROPULSION APPARATUS, AND MARINE POWER SYSTEM
Movable external cold water pump and motor electric hoisting device