Detachable unmanned aerial vehicle bomb throwing platform device
Train control system and method, electronic equipment and storage medium
Oil supplementing method of power transformer and expander lifting device thereof
Protection device for preventing accidental movement of lift car
Dragging type real-time communication device of underwater portable/mobile intelligent terminal
Sound insulation and heat insulation pad of automobile and production process thereof
New energy vehicle safe driving method and system based on intelligent Internet of Things
STAIR CLEANING ROBOT BASED ON RETRACTABLE ROTATING ARMS
Vehicle-mounted terminal T-BOX standby battery charging method and system
Motorcade passing method and device, vehicle-mounted terminal, storage medium and program product
Elevator running state detection method, equipment, device and storage medium
Elevator floor ID setting method and system about elevator hall-call board
Curve coordinate system establishing method and device, and electronic equipment