Unmanned aerial vehicle charging and discharging system and method and unmanned aerial vehicle
Electronic measuring instrument suitable for strong light environment
Automobile B-pillar upper lap joint structure and automobile
Method for preventing truck head from being smashed during container placing
Mining elevator gearbox hidden danger identification method and monitoring device
BATTERY MANAGEMENT METHOD, BATTERY MANAGEMENT APPARATUS AND AIRCRAFT
Charging pile power supply circuit of TBOX power supply
Single-oil-way forward variable-pitch mechanism propeller
Automobile voiceprint recognition control system and control method thereof
Combined lifting tool for mounting of solar panel and method
Device and method suitable for space station gas resource cyclic supply
Climbing auxiliary device for mining rail-mounted tour inspection robot