前束角（Toe Angle），是描述从车的正上方看，车轮的前端和车辆从线的夹角。车轮前端向内侧倾斜(内八字)，称为Toe in；车轮前端向外倾(外八字)，称为Toe out。束角的功用在于补偿轮胎因外倾角及路面阻力所导致向内或向外滚动的趋势，确保车子的直进性。
同时本文借助矩阵变换的计算力学方法，考虑进了车轮外倾角和前束角，准确的对转向车轮在转向时的运动变化进行理论分析计算。
At the same time, we academic analyze and compute the steering wheel during the vehicle turnaround using the transform matrix method considering the camber Angle and toe Angle.
束角式和坐角式，同样会打开骶髂关节之“锁”，前屈时也向骶骨周围的横向韧带增加了潜在压力。
Both Baddha Konasana and Upavistha Konasana unlock the sacroiliac joint and potentially strain the transverse ligaments of the sacrum, particularly if you bend forward.
结果：在后手直拳击打过程中上肢肌肉中三角肌前束做功百分比最高，平均为35%；
Results:Detoid anterior portion worked with an average of 35% in the process of straight punches in the upper extremity muscles;
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