The last two integrals correspond to the natural boundary conditions.

最后两个积分对应于自然边界条件。

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The results indicate that the higher order element exhibits better convergence than the lower order element in all cases without imposition of natural boundary conditions.

结果表明，在所有情况下，与低阶元素相比，高阶元素均显出有较好的收敛性。

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Thinking over the influence of box beams shear lag effect, making use of the governing different equations and related natural boundary conditions of bending vibration to box girder.

考虑箱形截面梁剪力滞后效应的影响，利用推导出的箱形截面梁的弯曲振动方程及其自然边界条件，并据此进一步推导出了多跨箱形截面梁的固有频率方程。

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Because the intensities of the 397 ka BP and present insolation minima are very similar, we conclude that under natural boundary conditions the present insolation minimum holds the potential to terminate the Holocene interglacial.

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