Rational design of metal oxide nanocomposite anodes for advanced lithium ion batteries
Intelligent vehicle-mounted anti-collision millimeter wave radar device
Electric locomotive lighting autonomous control system
Elevator air purification and disinfection device and purification and disinfection method
Automobile door capable of preventing door closing high pressure
Method and device for determining arrival time of train
Large segmented module transfer placing pier and machining method thereof
Self-monitoring electrical device and elevator circuit