Voice interaction system for actively reducing noise of internal call and vehicle
Venturi tube and automobile fuel steam desorption system
Streamline-shaped buoy capable of preventing floating objects from being wound
Staged energy absorption type automobile collision energy absorption box
Spur dike water depth and flow velocity measuring ship in case of accident
Shaft segment hoisting anti-twisting device and shaft segment hoisting anti-twisting system
Shaft segment hoisting and anti-twisting device and shaft segment hoisting and anti-twisting system
Separable backrest type device for improving safety and comfort of two-wheeled vehicle
Railway passenger car power supply line protection device
Novel energy feedback system for hybrid energy storage of elevator
Multifunctional recreational vehicle with foldable roof
Method for measuring water depth flow velocity of spur dike
Intelligent express delivery connection trolley for unmanned aerial vehicle delivery