Multifunctional recreational vehicle with foldable roof
Railway passenger car power supply line protection device
Spur dike water depth and flow velocity measuring ship in case of accident
Method for measuring water depth flow velocity of spur dike
Staged energy absorption type automobile collision energy absorption box
Image processing method and device, equipment and medium
Intelligent express delivery connection trolley for unmanned aerial vehicle delivery
Novel energy feedback system for hybrid energy storage of elevator
Venturi tube and automobile fuel steam desorption system
Auxiliary device used for installation and maintenance of fan frequency converter
Inspection robot for carbon dioxide monitoring and working method thereof
Streamline-shaped buoy capable of preventing floating objects from being wound
Separable backrest type device for improving safety and comfort of two-wheeled vehicle
Foot control anti-falling auxiliary device for two-wheeled vehicle
Voice interaction system for actively reducing noise of internal call and vehicle
Shaft segment hoisting and anti-twisting device and shaft segment hoisting and anti-twisting system
Shaft segment hoisting anti-twisting device and shaft segment hoisting anti-twisting system