Spline interpolation and Gaussian quadrature are developed for surface-fitting and double integration and applied to calculation of the flow and the efficiency in pumping station and the flow in aqueduct and pipe.

• 将曲线的样条函数插值和高斯配点法扩展到曲面上来解决这一问题,并对泵站流量、率、渠和管道流量进行了计算。