Beginning from the ordinary differential equations of separable variables, several ordinary differential equations of how to apply variable substitution to seek solution were generalized.
从可分离变量微分方程出发，介绍了几类如何用变量代换求解的常微分方程。
Separable variables are a special class of first order differential equations, which has a wide range of USES in practice.
可分离变量的一阶微分方程是一类特殊的一阶微分方程，它在实际中有着广泛的用途。
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