To compute the stress of the cylindrical roller bearings under loading is a typical boundary nonlinear contact issue.

圆柱滚子轴承在载荷作用下的应力分析，是典型的边界非线性的接触问题。

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Owners who believe that they have paid for a repair or replacement due to this issue can contact Apple for a refund.

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The United States and four big West European countries in the Contact Group that monitors the issue said new sanctions should be imposed on Yugoslavia, the federal state comprising Serbia and Montenegro.

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Prominent conservatives routinely contact Cato scholars for help understanding an issue or to have an expert review their work.

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