The mathematical expression of this model is a second order non linear ordinary difference equation.
该模型的数学形式是一个非线性二阶常微分方程，利用有限差分方法进行求解。
A kind of ordinary difference equation that can be transferred to Euler equation, often appears in polar coordinates solution of elastic problems.
在弹性力学问题的极坐标解答中，经常会遇到一类可转化为欧拉方程的常微分方程。
A kind of ordinary difference equation that can be transferred to Euler equation, often appears in polar coordinates solution of elastic problems.
在弹性力学问题的极坐标解答中，经常会遇到一类可转化为欧拉方程的常微分方程。
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