这是一个纯VML的例子，VML用于统计，有柱状图、饼状图、折线图。-This is a pure example of VML, VML for statistics, histograms, pie charts, line charts.

一个简单的数理统计系统，实现了矩阵的方差，协方差，概率统计等运算，包含说明文件的。-A simple system of mathematical statistics to achieve a matrix of variance, covariance, probability and statistics and other operations, including documentation.