Water life-saving satellite positioning alarm method and terminal, and life jacket
Double-line side-by-side opposite-pull boat moving method
Construction precision control method for cylinder pin hole type leg
Controllable synthesis and upconversion emission of ultrasmall lanthanide-doped Sr2GdF7 nanocrystals
Safe energy-saving elevator and application method thereof
Safe energy-saving bilateral elevator and using method thereof
Evaluation of forming forces in ultrasonic incremental sheet metal forming
Cart with height adjustable platform and methods of using the same
Analysis of the feasibility and necessity of special road construction for small passenger cars
Elevator control system based on Internet of Things technology