短語詞組短語approximate E solution 近似解an approximate analytical solution 逼近解析解approximate trajectory solution 近似彈道解approximate optimum solution 近似最優(yōu)解approximate invarient solution 近似不變解approximate optimal solution 最優(yōu)近似解approximate explicit solution 顯式近似解approximate fundamental solution 近似基本解 返回 approximate solution