In this paper, we attempt to discuss the conditions of closedorbit in more general -cases on the basis of the method of action-angle variables in analytical mechanics.
本文试图采用分析力学中作用角变量的方法，对一般情形下的轨道闭合条件进行讨论。
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The paper is devoted to nonlinear analysis of a military contest system. The nature of equilibrium points is studied. The nonexistence of closedorbit in real plain is proved.
Semiclassical closedorbit theory has been extensively used to explain the photo-absorption spectra of atoms in external fields due to its clear physical picture and wide availability.