Electric vehicle charging port protection structure and charging port cover automatic closing method
Robot for cleaning surface of underwater cylindrical pier and cleaning method
Encircling crawling robot and method for highway bridge underwater pier column detection
Forming process of fireproof door leaf with escape channel
Movable mechanical helicopter take-off and landing system
Dynamic telescopic device for filling gaps and platform door system
Robot inspection lifting mechanism, robot and lifting control method
Field damage assessment method for structure static test and thermal strength test