Water body surface layer intelligent cleaning device and method under hydrodynamic condition
Compact hydraulic tail gate with lifting function and control method thereof
Design method of watertight/weather-tight special opening and closing door for unmanned ship
Train ground door linkage control method and device, platform door controller and medium
Tower crane embedded section supporting horse stool system and construction method thereof
Electrically-controlled transport ladder piece for photovoltaic panels
Fault removing device capable of being used as end plough and railway vehicle
Shell-free counterweight and preparation method and application thereof
Integrated gangway ladder sealing device and working method
Fixed electric bicycle centralized anti-theft management system and using method thereof
MULTI-ELEVATOR VERTICALLY-LIFTING THREE-DIMENSIONAL PARKING GARAGE
Turnout grinding wagon body structure and grinding wagon
Tool for transporting light partition wall and manufacturing method thereof