四边形

• So this article use arbitrary quadrilateral thick and thin balsa universal element
  因此本文采用的是任意四边形厚薄板通用单元。
• This means that the nine - point scheme does not apply to irregular quadrangle grids
  换言之，该格式不适应于一般的不规则四边形网格。
• Study on design method for normal helicoid blanks based on spatial quadrilateral elements
  基于空间四边形单元的正螺旋面下料图设计方法
• Humpback or trapezoidal speed bumps . geometric characteristics and situation parameters
  弓背式或不规则四边形速度档板.几何特性和状态参数
• A new quadrilateral bi - linear thin plate element based on the membrane - plate similarity theory
  一个基于膜板比拟理论的四边形双线性薄板单元
• Quadrilateral thin shell element based on area coordinate for dynamic explicit analysis
  薄板成形动力显式有限元算法与面积坐标四边形单元模型
• 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。
• Structured quad mesh generation of curved surfaces and method of locally adding mesh density based on mapping approach
  基于映射法的曲面结构化四边形网格剖分及局部加密技术
• An algebraic multigrid method of quadratic lagrangian finite element equations under the unstructured quadrilateral grids
  求解非结构四边形二次拉格朗日有限元方程的代数多重网格法
• At the heart of the artwork is a set of four monstrously massive stars , collectively called the trapezium
  在艺术品的心脏地带是四颗怪兽般的大质量恒星的集合体，统称为猎户座四边形。