| 1. | A trapezoid is a quadrilateral with two parallel sides .
梯形是具有两平行边的四边形。 |
| 2. | Research on optimization process of quadrilateral mesh
四边形网格的优化处理研究 |
| 3. | A plane figure with four sides and four angles
四边形有四个边和四个角的平面图形 |
| 4. | A kite is a quadrilateral with one line of symmetry
风筝是个有一条对称线的四边形。 |
| 5. | Generation of contour in quadrilateral shell elements
四边形板壳单元等值线的简易生成 |
| 6. | High order rectangular element of manifold method
高阶四边形单元的流形方法 |
| 7. | Examples for application of properties of complete quadrangle
完全四边形的性质应用举例 |
| 8. | Moduli of quadrilaterals and substantial points
四边形的模与本质边界点 |
| 9. | Grand square - the most intense quadrangular configuration
四分相? ?最紧张的四边形结构。 |
| 10. | A proposition of a double heart quadrilateral
关于双心四边形的一个命题 |
