It is theoretically and practically important to spread widely the application of the Mindlin's stress formula.

对明氏解的推广应用具有重要的理论意义和长远的实用价值。

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Based on the equivalent stress formula of the coiled tubing, the life prediction model was put forward and a semi-empiric formula for prediction …

现文利用等效应力建立了连续油管的疲劳寿命估计模型；

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Tangential residual stress formula closely related to fatigue is verified. The result shows that theoretical calculation conforms to the test result.

对与疲劳寿命紧密相关的切向残余应力计算式进行了试验验证，结果表明：理论计算与试验结果基本符合；

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But the Nepad formula of partnership with developing countries, stress on good governance and human rights and encouragement of foreign investment was adopted by the continent's heads of state at the inaugural meeting of the African Union in Durban in July.

BBC: Namibia