中文摘要：

研究了三阶非线性边值条件的非线性方程奇摄动问题,先用合成展开法对形式近似解进行构造,再利用相关微分不等式理论给出所得解的存在性及一致有效性的证明.

英文摘要：

Singulary perturbed problem for third-order nonlinear equation with nonlinear boundary value condition is considered.Using the method of composite expansion,the formal asymptotic expansion of solution of the problem is constructed.Then using the theory of differential inequalities, the existence of solution and the uniformly validity of the expansion are proved.