...多重网格法；边界截取；粗网格；收敛性；大地电磁法[gap=1671]Key words: multigrid method; boundary truncation; coarse grid; convergence; magnetotelluric method...
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在粗网格校正过程中，给出了一种近似求解位移向量误差的方程；
An equation to estimate approximately the error of the displacement vector was given in the correction of the coarse mesh.
组合杂交有限元法（CHFEM）具有增强低阶位移格式粗网格精度的内在机制。
The combined hybrid finite element method (CHFEM) is of the mechanism of enhancing coarse-mesh accuracy of conventional displacement elements.
因此，这种局部和并行算法仅仅涉及一个粗网格上的整体逼近和细网格上的局部校正。
Hence, these local and parallel algorithms only involve one small original problem on coarse mesh and some correction problems on local fine grid.
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