New energy vehicle parking space, charging pile operation system and charging pile operation mode
Motor vehicle head-on collision and rear-end collision preventive system
Sludge transfer device for advanced treatment of river channel
Metamaterial structure capable of greatly improving wave-transparent rate of glass
Anti-shaking intelligent automobile data recorder with heat dissipation function
Steam-type vehicle-mounted air auxiliary filtering system
Self-adjusting air inlet grille for new energy automobile
Unmanned aircraft landing gear and unmanned aircraft with same
Locking device for folding type unmanned aerial vehicle arm
Double-winch hydraulic control system, operation machine and control method
Online sideslip angle estimation method for large fire extinguishing amphibious aircraft
Photographing auxiliary tool for digital building surveying and mapping