1. 三角形：网格划分是有限元的特色,自然网格影响巨大,包括计算成本(Cost),计算精度,收敛性(convergence)对2D问题,四边形(quadrilateral)单元优于三角形(triangular),3D呢?

2. triangular的解释

2. 三角形的：conical 圆锥的 | cube 立方体 | triangular 三角形的

3. 三角形的三者间的：triangular 三角形的 | triangular 三角形的 三者间的 | triangular 三角形的三者间的

1. 三角(形)的
    Something that is triangular is in the shape of a triangle.

    e.g. ...cottages around a triangular green.
           坐落在一块三角形绿地周围的小别墅
    e.g. …triangular bandages to make slings.
           用作吊腕带的三角绷带

2. 三角关系的;三人间的;三方面的
    You can describe a relationship or situation as triangular if it involves three people or things.

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    e.g. One particular triangular relationship became the model of Simone''s first novel.
           一段特殊的三角关系成了西蒙娜第一本小说的原型。

1. having three sides

    e.g. a trilateral figure

    Synonym: trilateralthree-sided

2. having three angles
    forming or shaped like a triangle

    e.g. a triangular figure
           a triangular pyrimid has a triangle for a base