Bicycle based on self-adaptive speed change mechanism
Braille character board applied to elevator and manufacturing method of Braille character board
Reversing valve and thermal management system for electric equipment
Automobile passing scheduling method and device and electronic equipment
Method for automatically recording and photographing vehicle after collision
Unmanned aerial vehicle with parachute and control method of unmanned aerial vehicle
Method and system for controlling slow descent of abrupt slope
Battery replacement mechanism, battery replacement system and battery replacement method
HAVIT: A VR-Based Platform to Support Human-Autonomous Vehicle Interaction Study
Frame locking mechanism for folding and unfolding limiting