短語(yǔ)詞組短語(yǔ)immovable point theorem 不動(dòng)點(diǎn)定理Banach immovable point Banach 不動(dòng)點(diǎn)原理immovable point method 不動(dòng)點(diǎn)方法stable and immovable point 穩(wěn)定不動(dòng)點(diǎn) 返回 immovable point