The author has already developed a practicable method to calculate the best-fit line, but it involves much calculation requiring a digital computer and an associated computer program.
作者曾提出过一种求最佳直线的实用方法，但计算量较大，一般要求使用计算机和一套专用程序。
2
Starting with the relation degree, this paper has presented a method for selecting a grey model, which could bestfit the oil and gas field.