tangential vector meaning in English

切向量

When the animation is suspended , click at the red ball and drag the mouse button to change its tangential vector ,
此时若在红球位置按下滑鼠键拖动滑鼠，将可改变红球切线速度大小，
Firstly , a simple and practical representing method of the tooth edge tangential vector is applied to replace the traditional differential formula , the simple solving technique of edge contact problem makes the geometric edge contact analysis of the complex curve surface realize . secondly , using numerical searching and mathematical programming method solves the contact directions and loaded contact problem . finally , whole numerical simulation method is provided for loaded tooth contact analysis of high contact ratio spiral bevel gears
首先以一种简单实用的轮齿边缘切矢量的数学表示方法取代了经典的微分表达式，大大简化了几何边缘接触的求解，使复杂曲面的几何边缘接触分析得以实现；其次又采用数值搜索与数学规划法求解了边缘接触的主方向和承载接触问题，为高重合度弧齿锥齿轮承载啮合全过程的数值仿真提供了完整的方法。