According to the stress and Galerkin's variational principles, the mixed variational equations for the laminated shell are presented, from which the state equation is obtained.

根据应力变分原理和伽辽金变分原理，导出叠层圆柱壳的混合变分方程，并将其转换成状态方程。

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Giving up any assumptions about displacement models and stress distribution, the state equation for the axisymmetric problems of thick closed laminated cylindrical shells is established.

抛弃任何有关应力或位移模式的人为假设，在轴对称情况下，对强厚度叠层闭口柱壳建立其状态方程。

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Based on the third order zigzag displacement model, a bending theory for laminated composite plates in an initially stressed state is derived by use of the principle of virtual work.

基于三阶折线位移模型，利用虚功原理导出了含初始平面应力的层合复合材料板的弯曲理论。

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Given that it often drizzles in Wales, it is a good idea to pick up a laminated map of the relevant area from the Ordnance Survey, Britain's state mapmaker.

BBC: Walking the new Wales coastal path