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The regular perturbation method is described.
简要介绍了正则摄动法。
The asymptotic solutions composed of finite terms of elementary functions are obtained by regular perturbation method.
采用正则摄动法，求出了由有限项初等函数所构成的渐近解。
If the regular perturbation method is used to solve the same problems, then, when the independent variable is big, so is the error of the solution.
如果用正则摄动法求解此类问题，则当自变量较大时，误差很大。
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