主要讨论了一类混合指数型算子的一致逼近问题，并给出了逼近阶的估计和特征刻划。

In this paper, a class of mixed exponential type integral operators are considered and the equivalent theorems of the characterization of approximation rate are given.

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本文通过对油膜压力进行二阶泰勒级数展开得到油膜摄动压力方程组，采用指数膜假定求解油膜摄动压力方程组，得到推力轴承油膜刚度和阻尼的解析表达式。

In this article, author derives oil film perturbed pressure equation through expanding pressure using a Taylor Series. With exponential film assumption, analytical expression of OFSD is also derived.

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主要研究一类三阶两点边值问题变号解的存在性和多重性，利用不动点指数和拓扑度理论等得到了新的结论。

We show existence results for multiple sign-changing solution for third-order two- point boundary value problems by using the fixed point index and the topologic degree theory.

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