two-grid怎么读

The Laplace equation has been applied to get two-dimensional orthonormal curvilinear grids inside the computational domain, and the subsection Lagrange interpolation boundary slide method of orthogonalized boundary for orthonormal curvilinear grid has been put forward and used on computational domain boundaries in the paper.

在内域求解拉普拉斯方程组生成二维正交曲线网格，在计算域边界提出了正交曲线网格边界正交化处理的分段拉格朗日插值边界滑动法；

With mixed finite element method, the unknown function value is got, at the same time more accurate derivative is come up. The two-grid method divides the domain for two times.

混合有限元方法在求解函数值的同时得到导数值，而且精度比通过函数值差商的结果要高；两重网格算法对求解区域进行两次剖分，将非线性迭代归结在粗网格上进行。

For the two-dimensional problem, it can generate triangular element meshes and quadrilateral element mesh; for the three-dimensional problem, it can provide a grid cell including the tetrahedron, hexahedron, pyramid, wedge-shaped body and hybrid grids.

对于二维问题，可生成三角形单元网格和四边形单元网格；对于三维问题，提供的网格单元包括四面体、六面体、棱锥、楔形体及杂交网格等。