短語詞組短語partial least squares technique 偏最小二乘法penalized least squares technique 補償最小二乘原理moving least squares technique 滑動最小二乘技術ILST Iterative Least Squares Technique 迭代式最小二次冪技術smoothness -contrained least-squares inverse technique 平滑度約束的最小平方反演法 返回 least squares technique