Oversteer is when the rear wheels are carving a larger arc than the front wheels or the intended line of the turn.
当后轮划出的圆弧比前轮划出的圆弧更大，或者比预期的车辆转弯路线更大时，就是发生了转向过度。
2
Upper-roll fixed, the two rollers under a fixed turn around the center arc movement take-off and landing, under two separate movements can roll up or down with.
上辊固定，两下辊围绕一固定回转中心做弧线升降运动，两下辊可单独升降或同升同降。
3
Based on the model, calculation formula of available light-triggered current and turn-on condition in LTT arc obtained.