Traffic accident will generally lead to vehicle's impact crash, and part of kinetic energy of the damaged vehicles is transferred to deformation energy.
常见的事故类型通常都伴随着车辆的碰撞变形，事故车辆动能的一部分在碰撞中转化为变形能。
2
The invention provides an energy-saving escalator which uses the principle that potential energy is converted into kinetic energy to lead the lower escalator not to need the power input;