Marine propeller mounting rack, marine propeller and ship
Front door glass wool groove with automatic opening and closing invisible weather screen
Modularized front cover opening and closing locking mechanism
Space five-rod flapping-wing aircraft based on rigid-flexible coupling
Commercial vehicle emergency steering system and commercial vehicle
Foldable vehicle waterproof box cover of pickup truck
Inner rear-view mirror mounting structure and mounting method
Control handle, propeller and water area movable equipment
Adjusting device for vehicle steering gear and vehicle
Control handle, propeller and water area movable equipment
Lifting platform capable of greatly improving descending degree
Vehicle storage battery state monitoring method and system
Three-station-transfer lifting device special for hot galvanizing of fastener
Target area detection method and device, storage medium and electronic device