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. 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.

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。

adj

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