建议一种新的摄动方法

A NEW PERTURBATION TECHNIQUE

在本摄动方法中，未扰方程或约简方程为原方程的线化方程，因此其初始近似就较好地接近真解．本方法具有直接展开法的优点，又可以避免出现长期项．

In this new perturbation technique method, the unperturbed equation is the linearized equation of the original one, so the solution of the unperturbed solution is actually the approximate solution of the exact solution. The present theory is as simple as the straightforward expansion, while can eliminate the secular expansions completely.