Water life-saving satellite positioning alarm method and terminal, and life jacket
Vehicle-to-vehicle charging system and method and electric vehicle
Vehicle control method and device for highway ramp in vehicle-road coordination environment
Unmanned aerial vehicle high-rise fire extinguishing bomb launching device
Safe energy-saving elevator and application method thereof
Safe energy-saving bilateral elevator and using method thereof
Precision control method for moving and folding giant block
Network rail tunnel comprehensive detection system and method thereof
Network rail tunnel comprehensive detection system and method capable of active detection
Network rail tunnel comprehensive detection system and method based on big data
Network rail tunnel comprehensive detection device and method based on edge calculation and big data