Angle measuring device and semi-trailer transport vehicle
Automatic detection method for water quality parameters of large-area river crab aquaculture pond
Detachable moving device for surrounding rock morphology acquisition
Fire-fighting detection system and method for electric power system
Impact-resistant shipborne transmission system with anti-corrosion control device and method
Railway train wheel set tread fault detection method and device and medium
Rapidly-moving derrick lifting device for drilling machine
Transporting and weighing system and method for materials under hook
Two-stage unfolding double-shaft tracking satellite-borne antenna gravity unloading system