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Agricultural unmanned aerial vehicle sprayer capable of controlling the spraying area
Aircraft wing loading section weight deduction protection device and method thereof
Airplane horizontal tail elevator maneuverability test device and method thereof
Anti-shaking protection device for lifting rope of crane
Artillery wheel universal assembly and disassembly vehicle
Automatic charging system and method for low-voltage battery of electric vehicle
Battery equalization method and battery equalization device
Combined lifting appliance for self-propelled gun engine compartment
Device for assisting people with visual impairment in taking bus
Device for explaining traffic lights of different versions
Double-pin adjusting type universal vehicle body bracket
Electric vehicle low-voltage battery electricity shortage prevention automatic control method
Equipment integrating evidence collection and intelligent identification
Gas pipe and channel comprehensive arrangement structure for dual-fuel container ship
Immersed tube subsea tunnel semi-floating foundation bed leveling method
Large container ship lashing bridge with only-shaped grillage structure