Oil supplementing method of power transformer and expander lifting device thereof
Dragging type real-time communication device of underwater portable/mobile intelligent terminal
High-voltage SiC motor controller and electric automobile comprising same
Automatic hovering MEMS sounding balloon and real-time natural meteorological acquisition system
Method, device, system and equipment for pre-judging battery capacity of vehicle and storage medium
Target positioning turntable system capable of reducing electromagnetic interference
Hydrogen protection device of hydrogen fuel cell for aviation
New energy automobile automatic charging equipment with high safety
System net cage capable of automatically replacing netting
Truss type submarine cable underwater detection beacon carrying device