Let A(u),u U be perturbation subests of a linear metric space E and C(u), U be perturbation comex cones of E .是什么意思_Let A(u),u U be perturbation subests of a linear metric space E and C(u), U be perturbation comex cones of E .在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句