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Automatic inflation life buoy capable of easily keeping balance
Tilting adjusting device for rotor wing of unmanned aerial vehicle
Traffic condition information providing method and device and server
Road traffic display system and display method thereof
Lightning protection device for thin-wall metal skin of aircraft and aircraft
Swing rod type pretreatment lifting appliance and using method thereof
Micro-vortex generating device with airflow auxiliary control
Crane jib switching valve, hydraulic control system and engineering machinery
Crane sliding shoe capable of automatically inserting and pulling pin
PARKING BRAKE HYDRAULIC CONTROL SYSTEM AND FORKLIFT LOADER
Parking brake hydraulic control system and forklift loader
Autonomous Landing of a Micro Aerial Vehicle on a Moving Platform Using a Composite Landmark
Vehicle-mounted interaction system based on emotion perception and voice interaction