有详细的注释，是机器学习的例程，计算晶粒的生长，入门级别程序。- There are detailed notes, Machine learning routines, Calculation of growth, entry-level program grain.

复化三点Gauss-lengend公式求pi，是机器学习的例程，计算晶粒的生长，入门级别程序。- Complex of three-point Gauss-lengend the Formula pi, Machine learning routines, Calculation of growth, entry-level program grain.

吴恩达老师的几个机器学习例程，比较简单容易上手(Some of Mr. Wu Enda's machine learning routines are easier and easier to handle)