Electric vehicle alarming method and system and electric vehicle
Marine high-power multi-split air conditioning system
Carrying cloud deck for unmanned aerial vehicle high-energy ray emitter
OPENING/CLOSING MECHANISM EQUIPPED WITH A SELF-LOCK DEVICE
Guiding device and guiding method of rail transit vehicle
OPENING/CLOSING MECHANISM HAVING A SELF-LOCKING DEVICE
Locking device and opening and closing mechanism having the same
LOCKING DEVICE AND OPENING AND CLOSING MECHANISM HAVING THE SAME
CONDUCTIVE SHIELD, SCRATCH DETECTING APPARATUS AND METHOD BASED ON THE CONDUCTIVE SHIELD
Anti-falling crane lifting hook with auxiliary guiding structure
Adjustable crane trolley limiting device with buffering structure
Intelligent three-way acceleration control child seat