Backflow lifting device and backflow conveying system
Railway crossing maintenance and protection system based on surrounding environment monitoring
Building hollow brick plate collecting device and method
Deep-sea oil-filled mechanical release device and use method thereof
Rod piece waterproof structure for rail transit turnout switching
Storage battery electric engineering vehicle and vehicle-mounted control method and device thereof
Method for preventing aircraft from setting error value, electronic device, medium and system
Rail flaw detection method and rail flaw detection equipment
Turnout switching equipment and method suitable for tramcar
Low-rolling-resistance tire crown structure and forming method thereof
Cylindrical linkage turnout position detection rod for point switch