用两个相邻的近似公式（其中后一个公式是由前一个公式的分半得到的）的线性组合而得到更好的近似公式的方法，就是近代电子计算机上常用的Romberg求积方法，也叫逐次分半加速（收敛）法。-With two adjacent approximate formula (where the latter formula is a formula from the previous one and a half received) is a linear combination of better appro