短語詞組短語extremum m value 極值extremum value control 極值調(diào)節(jié)extremum value control system 極值調(diào)節(jié)系統(tǒng)curvature extremum value 曲率極值absolute extremum value 絕對(duì)極值extremum value of multivariate function 多元函數(shù)的極值 返回 extremum value