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Hydraulic and pneumatic damping hub, wheel and automobile
Chain gear transmission type inflation-free damping wheel and vehicle
Intelligent trolley for detecting quality of ballastless track limiting groove
Characterization of hexagonal ɛ-Ga1.8Sn0.2O3 thin films for solar-blind ultraviolet applications
Pressure monitoring device for track elastic strip buckle
Automatic detection system for hidden diseases of track plate
Double-source power supply rail engineering vehicle and power-on method thereof