Highly protective road construction anti-collision guardrail and using method thereof
Communication method, device, charging pile and system for charging of electric vehicle
Secondary loading structure for airplane structural strength ground test
Electric heating wire type windshield glass cleaner nozzle heating device
Aerial pesticide spraying machine for agricultural pest control
Flow guide cabin hydraulic lock control system and control method thereof
Entrance guard opening method and device for passing of electric bicycle
High-rigidity unfolding mechanism for solar wing of microsatellite
Context-aware open-pit mine truck driver driving style identification method
Speed pulse signal acquisition device and method of tramcar signal control system
Ship berthing area intelligent guidance system based on AIS and video intelligent analysis