释义 |
Grey sequence 基本例句 灰色数列 In this paper, grey sequence forecast model PGM was built by using Excel which consisted of matrix operation and function of programming, so that the forecast precision was improved.本文通过Excel提供的矩阵运算和规划求解功能实现了用Excel软件建立灰色数列预测模型PGM;并提高了预测精度. |