结构总最小平方 least squares: 线性最小二乘法; 最小平方approximation by least squares: 用最小二乘方的近似法; 最小二乘方近似法classical least-squares theory: 经典最小平方理论collocation least squares: 配置法平差criteria of least squares: 最小二乘准则下载手机词典可随时随地查词查翻译