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Multi-rotor unmanned aerial vehicle for surveying and mapping geographic information
Mounting holder and electric power inspection unmanned aerial vehicle
Eccentric weight adjusting device and electric power inspection unmanned aerial vehicle
Lightweight urban and rural bus intelligent electronic station board and control system
Vehicle dynamic parking reservation system capable of parking scheduling
Navigation mark collision monitoring evidence obtaining system and evidence obtaining method
Signal transmission device of cable-free underwater robot
Insulated pole-climbing-free self-propelled grounding device
Information display method and system, controller and vehicle
Multi-transmitting-end unmanned aerial vehicle laser remote charging method
Multifunctional trolley for overhauling transformer substation
Multi-element sensing distributed test system suitable for surface ship and construction method
Magnetic field detection management system for sleeper magnetic induction device