Some singularly perturbed quasilinear boundary value problems with boundary layer properties arernstudied. Under the weaker conditions, the formal approximation of the problem is constructed using the methodrnof composite expansions, and the existence and asymptotic behavior of solutions are proved by the fixed pointrntheorem.%研究了一类具有边界层性质的奇摄动拟线性边值问题.在相对较弱的条件下,用合成展开法构造出该问题的形式近似式,并应用改进的不动点定理证明了解的存在性及其渐近性质.
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