Anti-slip and wear resistance performance of three novel coatings as surface course of airstrip
Automatic emergency help-seeking equipment and help-seeking method for elevator
Lifting variable magnification structure of tower crane
Display control method for instrument screen, processor, vehicle and storage medium
POWER SOURCE SWITCHING SYSTEM, POWER SUPPLY CIRCUIT SWITCHING METHOD, AND ELECTRIC VEHICLE
Hoisting method for overhead line system pole erecting operation vehicle
Safety prompting facility for preventing hands of children from being pinched by elevator door
Mobile car washing device based on Internet-of-things new energy
Vehicle-mounted storable holographic projector for car