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Positioning device of cross array multi-beam depth finder and positioning method thereof
Automatic hoisting control system and device for drill rod of twist drill coal mining machine
Automatic power-off induction device for power battery after vehicle collision and turnover
Urban elevator operation and maintenance management and control integrated system
OPERATION AND MAINTENANCE MANAGEMENT AND CONTROL INTEGRATED SYSTEM FOR URBAN ELEVATOR
Elevator safety fault diagnosis method based on multi-source information fusion
ELEVATOR SAFETY FAULT DIAGNOSIS METHOD BASED ON MULTI-SOURCE INFORMATION FUSION
ONLINE STATE INSPECTION SYSTEM FOR HOISTING ROPE OF ELEVATOR, AND INSPECTION METHOD THEREFOR
Elevator shaft three-dimensional scanning reconstruction and deformation dynamic monitoring system
Elevator shaft monitoring system based on external internet of things