短語詞組短語approximation equivalent theorem 逼近等價定理Approximation transform theorem 逼近轉化原理approximation equivalence theorem 逼近等價定理approximation direct theorem 逼近正定理Picard approximation theorem 皮卡逼近定理strong approximation theorem 強逼近定理weierstrass uniform approximation theorem weierstrass 一致逼近定理stone s approximation theorem 斯通逼近定理Overall function approximation theorem 通用函數(shù)逼近定理 返回 approximation theorem