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中文摘要：
该文研究了一类包含二阶导数项的四阶超线性奇异微分方程边值问题，得到正解的存在性及有关性质．然后，对于不含有二阶导数项的情况，得到其C^2[0，1]正解、C^3【0，1】正解存在的充分必要条件．
英文摘要：
This paper investigates a kind of fourth order superlinear singular boundary value problem, which contains a second derivative item. The authors obtain the existence and some properties of the solutions. Lastly, a necessary and sufficient condition for the existence of C^2[0, 1] positive solutions as well as C^3[0, 1] positive solutions is given for the problems which do not contain derivative items.
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