三角形

According to axisymmetric unsteady heat conduction equation of orthogonal aniso tropic material and boundary conditions,the equilibrium equation of a system of finite elements is deduced with triangular element of high accuracy,and programs are designed.

根据均匀正交各向异性材料轴对称热传导方程及其边界条件，利用变分法及欧拉理论，选取 6 节点的高精度三角形单元类型，推导了一般轴对称非定常热传导有限元基本方程。并编制了相应的计算程序。

As the equation of the curve determined by companion centers shows, our main result is that the set of all companion centers of a nonisosceles triangle is the unique equilateral hyperbola, called the hyperbola of , passing through the vertices ,, and the barycenter of .

透过伴心轨迹方程式我们得到主要结果如下：非等腰三角形的伴心所成的集合是一个通过三顶点、、及重心唯一的等轴双曲线，称为的双曲线。

An equilateral triangle would be formed with its associated 60 degree angle.

一个等边三角形是由关联的60度来组成的。

If one side of an equilateral triangle measures three feet,the other two must also be three feet each.

如果等边三角形的一边是三尺长，那么其他两边也一定是三尺长。

In the figure, ABC is an equilateral triangle while

图中，ABC 是等边三角形，而BCDE 是正方形。

The birth of a True Equilateral Triangle from Isosceles parents is the subject of rejoicing in our country for many furlongs around.

一个真正的等边三角形的等腰父母的出生是个普天同庆的日子许多荒山，我国各地的主题。

The vertices of equilateral triangle are on an circle.

等边三角形的所有顶点都在一个圆上。

One field is an equilateral triangle, one field is a circle, and one field is a square.

一块田是等边三角形，一块是圆形，一块是正方形。

Which of the following is an equilateral triangle?

哪个是等边三角形？

This is a right triangle(isosceles triangle/ equilateral triangle).

这是一个直角三角形。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。