Unmanned vehicle-mounted mobile robot cooking safeguard vehicle
Device for connecting inner cover plate and outer cover plate and supporting armrest guardrail
Rudder blade hoisting centering tool and hoisting centering method
Honeycomb type non-pneumatic tire with thickness gradient
Unmanned carrying semi-flexible connection mounting and releasing device
Detachable slipway carrying and supporting tool and application method
Underwater communication relay buoy for ocean engineering
Automatic floating device and method for underwater ocean platform