短語(yǔ)詞組短語(yǔ)ordinary y differential equation 常微分方程ordinary difference differential equation [數(shù)]常差分微分方程ordinary differential equation ode 常微分方程ordinary differential equation group 常微分方程組implicit ordinary differential equation 隱式微分方程homogeneous ordinary differential equation 齊次常微分方程;齊次微分方程solving ordinary differential equation 解常微分方程 返回 ordinary differential equation