实现圆柱真齿轮的参数化建模（apdl）,适用于所有压力角和模数。是个类似fortran的程序，没有ansys分类，先放这了。在ansys上运行-Cylindrical gear to achieve true parametric modeling (apdl), applicable to all the pressure angle and modulus. Fortran is a similar procedure, there is no ansys classification, f