Transmission device of bicycle and push-pull rod type speed changer based on transmission device
Modified magnet and application of modified magnet on automobile axle
Unmanned aerial vehicle cluster anti-interception collaborative strike guidance method
Mechanical energy collecting system and method thereof
Photoelectric navigation pod and photoelectric navigation system
Automobile brake friction device and preparation method thereof
Visual navigation automatic lifting and recycling device for water robot
Underwater collection device based on flexible mechanical arm
Offshore buoy lamp based on ocean thermoelectric power generation
Bulk clinker aggregate loading system parking guide device and guide method