Marine equipment base stress calculation method and device based on finite element model
Rail transit control method and device, electronic equipment and storage medium
Permanent magnet momentum ball for attitude adjustment of small spacecraft
Instrument board beam and automobile instrument board
Superstructure for optimizing liquid cargo distribution board arrangement
Mounting structure and method for surface sensor of C-type fuel liquid tank
Vehicle body front wall outer plate water guide structure and machining method
Umbrella-shaped storage folding hovercar and working method
Telescopic folding storage flying system and flying car
Air-ground dual-purpose telescopic hovercar and steering control method
Underground electric locomotive transportation method and system