Water source detection device for underground water source detection
Vehicle machine alarm display method and system based on radar
Unmanned aerial vehicle for well control ignition and control system and method thereof
Turnover type material frame structure for heat treatment of alloy cast iron products
Trailing edge flap driving device based on ultrasonic motor driving
The influence of hydrogen intercalation on inner pressure of Ni-MH battery during fast charge
Stamping type parafoil three-dimensional structure and machining method thereof