词汇	free symbol
释义	free symbol 自由符号
随便看	least square error least square error approximation Least Square Error Arithmetic least square error estimation least square error method least square error principle least square esfimate least square estimate least-square estimate least square estimation least-square estimation least square estimation of multiple regression Least square estimation of simple regression least square estimation process least square estimation sequence least square estimator least-square estimator least-square evaluation least square filter least-square filter least square filtering least-square filtering least square filtering restoration least square filter restoration least-square filter, Wiener filter