Multi-way valve rotation folding arm fixing mechanism of drilling crane
All-season semisteel tire tread rubber compound, and preparation method and application thereof
All-season semisteel tire tread rubber compound, and preparation method and application thereof
Fastener and method for mounting thermal-insulation and sound-insulation layer by virtue of fastener
Metro vehicle display screen centralized on-off control method
Obstacle avoiding mechanism of high-tension line patrolling robot
Forklift driving axle wheel hub speed reducing structure
Friction-free air floating space weightless rotation simulation device
Light electric motor coach power battery device and light electric motor coach
Circulating water vehicle washing device for deep foundation pit engineering
Urgent danger prevention braking device of mining rubber wheel carrier vehicle
Speed and journey measurement device of suspension steel wire rope
Precise ROV-A support adjusting and positioning method
Inspection hole device used for underwater inspection of ship