给出了两种常微分方程教材中关于奇解与包络关系结论的反例。
In this paper, some counter examples to the conclusions of singular solution and envelope in two textbooks of ordinary differential equation are given.
佩奇说“每个人都一样，当你对某事一知半解，你就更想了解它。”
“It will be included in people’s brains,” said Page. “When you think about something and don’t really know much about it, you will automatically get information.”
本文用微分不等式证明了二阶奇摄动系统解的存在性、唯一性和周期性。
This paper proves the existence, uniqueness and periodic problem of the solution about second order singular perturbation system by using the differential inequality.
本文讨论了一个奇摄动催化反应问题，得到了问题的形式渐近解，证明了它的一致有效性。
In this paper, a singularly perturbed catalytic reaction problem is considered. The formal asymptotic solution is obtained and its uniform validity is proved.
研究了一类含有迁移项的奇摄动抛物方程的周期解问题，给出了解的存在唯一性、渐近解及其余项估计。
The uniqueness of the solution is proved, and the asymptotic expansion of the solution and remainder estimation are also given.
方法110例解脲支原体泌尿道感染患者随机分为：阿奇霉素组、 罗红霉素组、克拉霉素组等3组。
Methods:110 cases of mycoplasma urealytium genitourinary tract infection were randomly divided into 3 groups, group Azithromycin, group Roxithromycin, group Clarithromycin.
研究了一类非线性奇摄动方程的激波问题。利用间接匹配法，构造出激波在区间内的激波解。
The shock wave problems for a class of the nonlinear singularly perturbed equations is studied. Using indirect matching method, the shock solutions of shock wave in an interval are constructed.
研究了一类非线性奇摄动方程的激波问题。利用间接匹配法，构造出激波在区间内的激波解。
The shock wave problems for a class of the nonlinear singularly perturbed equations is studied. Using indirect matching method, the shock solutions of shock wave in an interval are constructed.
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