用于机械行业CAD计算包角系数。支持多重拉格朗日插值法计算包角系数。可自由输入插值次方数。多重拉格朗日插值法计算算法有一定参考价值，属个人原创，如有雷同，绝属巧合。-CAD computing package for the machinery industry angle factor. Lagrange interpolation method to support multi-angle factor package. Enter the number of free interpolat