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
Anti-falling crane lifting hook with auxiliary guiding structure
CONDUCTIVE SHIELD, SCRATCH DETECTING APPARATUS AND METHOD BASED ON THE CONDUCTIVE SHIELD
Adjustable crane trolley limiting device with buffering structure
Intelligent three-way acceleration control child seat