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Automatic visual identification intelligent instrument panel device
Flight device with telescopic wings and use method thereof
Overflow brick placing device, application and placing method
Aircraft motor installation coaxiality adjusting method
Auxiliary device and crane stability control method and device
Ascender capable of carrying and transmitting moon sample
Lander for realizing lunar surface drilling surface sampling
Single-drum 50kN static hydraulic grinding cylinder type traction machine
Wheel end power clutch device of front drive axle with wheel edge speed reduction