Water surface garbage cleaning equipment for water conservancy project management
Photovoltaic floating body used in wave-resistant water environment and installation method
Rocket second sublevel capable of releasing satellite and working method
Material conveying equipment for road slope construction
Electric steering angle metering mechanism of electric vehicle
Stress absorption device based on flange-free waveguide and assembly method
Device for improving installation precision of large-scale cross-cabin waveguide
Material lifting device for construction and lifting method thereof
Surveying and mapping unmanned aerial vehicle device for urban updating
Connecting structure of satellite cabin-penetrating waveguide