Robot for cleaning surface of underwater cylindrical pier and cleaning method
Charging socket of electric automobile and electric automobile with charging socket
Forming process of fireproof door leaf with escape channel
Large-load buffering air bag giving consideration to landing and dampening working conditions
Movable mechanical helicopter take-off and landing system
Integrated multi-habitat self-adaptive intelligent propelling device and operation method
Brake, turning and shimmy damping integrated method for airplane controlled by hydraulic servo pump
Direct-current charging base for new energy automobile
Charging socket sleeve, charging system and electric vehicle
Unmanned surveying vessel with anti-collision function
Dynamic telescopic device for filling gaps and platform door system
Insulator hydrophobicity test device based on unmanned aerial vehicle