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Copper coil loading machine and loading and unloading method
Electric tractor for pipeline transportation in comprehensive pipe gallery and using method thereof
Electromagnetic lock structure and electromagnetic lock system
Generating a query index and querying on the basis of the query index
GENERATING A QUERY INDEX AND QUERYING ON THE BASIS OF THE QUERY INDEX
Hidden step and electric overhead working truck applying same
Intelligent LNG ship-ship refueling system capable of separating actively in emergency
Lifting device for new energy automobile chassis repair
Method and Apparatus for Recommending a Charging Station
Method and system for obtaining trajectory pattern of route