本文描述了一种新的、不依赖于小参数的非线性分析方法，并分析、比较了该方法与摄动展开方法的优缺点。
In this paper, a new kind of nonlinear analytical method which does not depend on small parameters is described and is compared with the perturbation techniques.
本文提出用摄动边界元法对材料非线性问题进行应力、应变分析。
In this paper a perturbation boundary element method is proposed to analyse stress and strain for the problems with nonlinear materials.
用摄动法分析刚球在非线性滑动摩擦力作用下的运动规律。
The perturbation method is used to analyse the motion of the rigid sphere under the action of the nonlinear sliding friction.
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