turning points in analytic mechanics分析力学的转折点
The research of modern analytic mechanics mainly includes two aspects: First, the research of higher-order differential equations of motion; Second, the research of symmetry and conservation quantity of mechanical system.
现代分析力学的研究主要包括两个方面:一、高阶运动微分方程的研究;二、力学系统的对称性与守恒量的研究。
参考来源 - 力学系统中的高阶运动微分方程与对称性和守恒量