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person:("Ma jing")
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person:("Ma ming")
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person:("Ma ying")
Speedometer on-site verification system based on Internet of Things
Abnormality protection device for operation of electric vehicle
Battery replacement method, server and battery loading and unloading equipment
Battery replacement station charging management method, battery replacement cabinet and system
Vehicle battery replacing method, battery replacing station, vehicle and system
Nuclear Energy Spectrum Decomposition Based on Hybrid Particle Swarm Optimization
Vehicle-ground joint control unmanned crossing control system
Railway station transportation room comprehensive control system
Control tower climbing rope suspension device based on unmanned aerial vehicle hoisting
Structural device convenient for transferring hydrogen storage tank