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Special bird nest removing device for outdoor power equipment
Surface feature hyperspectral high-frequency observation system based on unmanned aerial vehicle
Impact head and cutting cable composite forcible entry device
Intelligent retarder cooling control system and control method thereof
Linkage device of trap port transition bridge and trap port cover of elevator
Rail traffic three-layer single-column assembly type overhead station
Three-floor and double-pillar assembled elevated station of rail transit
Light-avoiding sheet for automobile during night driving