复化三点Gauss-lengend公式求pi，用谱方法计算流体力学一些流动现象的整体稳定性,已经调试成功.内含m文件，可直接运行。- Complex of three-point Gauss-lengend the Formula pi, Spectral methods of computational fluid dynamics flow of some of the overall stability of the phenomenon, Has been successful debu