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person:("wang xiuping")
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person:("wang xiuying")
Bicycle supporting frame for agricultural leisure and sightseeing tourism
Road section travel time monitoring method and device
Traction converter, power battery pack capacity equalization circuit and control method
Storage battery electric engineering vehicle and vehicle-mounted control method and device thereof
Automatic adjusting method, device and equipment for vehicle-mounted sun shield
CHARGING CONTROL METHOD AND SYSTEM FOR ENERGY STORAGE ELEMENT, AND LOCOMOTIVE
Energy storage element charging control method and system, and locomotive
Train power supply method, system and device and train