Active following type circular solar wing zero-gravity unloading system
Adjustable electric hoist and support structure thereof
Aircraft wing device, unmanned aerial vehicle and patrolling bomb
All-in-one sealing device based on sliding plate chassis, sliding plate chassis and automobile
Anti-carsickness control method and system in automatic driving mode and automobile
Anti-pirate device for bulk cargo ship ventilator and working method of anti-pirate device
Assembly layout design method for water surface ship stern shape and water-jet propeller
Auxiliary hoisting device special for special-shaped building component and hoisting method thereof
Battery heating control method, device and system and vehicle