Laser scanning vehicle for detecting surface roughness of track paving layer
Connecting piece for power transmission line engineering
Bolt fastening device and bolt fastening climbing operation platform with same
Auxiliary device for dismounting and replacing reinforced concrete support and using method thereof
Data processing method of mobile three-dimensional scanning system based on self-moving rail transit
Self-moving rail transit three-dimensional scanning system
Bridge steel box girder hoisting equipment and construction method thereof
Circuit breaker sleeve transfer trolley and circuit breaker sleeve transfer device