So it is obvious that the formation orthotropy has great effect on the casing stress, which should be considered in casing design process.
这一结论说明：在均匀水平地应力条件下，地层各向异性对套管受力有着较为明显的影响，在设计套管外挤载荷时，应该给予充分考虑；
Discarding any assumptions about displacement models and stress distribution, the state equation is established for the axially symmetric problem of orthotropy.
抛弃任何有关位移或应力模式的人为假设，在轴对称情况下导出正交异性体的状态方程。
Based on the dual variables, the Hamiltonian system theory is introduced into plane orthotropy elasticity, the transformation from Euclidian space to symplectic space is realized.
通过引入对偶变量，将平面正交各向异性问题导入哈密顿体系，实现从欧几里德几何空间向辛几何空间的转换。
Based on the dual variables, the Hamiltonian system theory is introduced into plane orthotropy elasticity, the transformation from Euclidian space to symplectic space is realized.
通过引入对偶变量，将平面正交各向异性问题导入哈密顿体系，实现从欧几里德几何空间向辛几何空间的转换。
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