1. Eight-nodded curvilinear quadrilateral isoparametric shell element is used both in the FEM and in the BEM. 在有限元方法和边界元法中均采用了八结点曲面四边形等参单元。
2. You will understand two color pattern of the Left, the triangle is smooth coloring, with the quadrilateral plane coloring. 你将理解两种着色模式，在左图中，三角形用的是光滑着色，四边形用的是平面着色。
3. A novel method of quadrilateral partition on cloudy manifold triangular meshes is presented, which is based on algorithms of mesh simplification and harmonic mapping. 针对海量流形三角网格数据，提出了基于网格简化技术与调和映射算法的四边形网格生成新方法——映射法。
