三角形

The major purpose of this article was to illustrate the innovating instruction of the topic-"triangle" for the third graders. From the experience of the classrooms, it is considered that the curriculum is only to instill into children some geometric nouns, such as the sides, the apexes and the angles. A closed graph with three angles is usually to be named as a triangle without thinking about children's understanding of the real meaning.

本文的主要目的乃是针对教学者本身以往在教国小三年级学童的「三角形」这个单元时，自觉只是在灌输孩子一些几何的名词，例如：这个就是边、顶点和角；有三个角的封闭图形就是三角形，并没有去考虑到孩子是否真正的理解这些语词的涵意。

The conceptualist view is best illustrated by the classic senmantic triangle or triangle of significance suggested by Odgen and Richards.

意念论可由著名的语义三角形来表述。语义三角形是论述和解释语义现象的一种经典理论。

Mathematics: Understands and applies basic and advanced properties of the concepts of geometry; Use the Pythagorean theorem and its converse and properties of special right triangles to solve mathematical and real-world problems; Understands the basic concepts of right triangle trigonometry (e.g., basic trigonometric ratios such as sine, cosine, and tangent); Uses trigonometric ratio methods to solve mathematical and real-world problems (e.g., determination of the angle of depression between two markers on a contour map with different elevations); Uses properties of and relationships among figures to solve mathematical and real-world problems e.g., uses the property that the sum of the angles in a quadrilateral is equal to 360 degrees to square up the frame for a building; uses understanding of arc, chord, tangents, and properties of circles to determine the radius given a circular edge of a circle without the center

数学：理解和应用几何概念的初级和高级特性；用毕德哥拉斯定理、逆定理以及特殊直角三角形性质解决数学的和现实世界的问题；理解基本的直角三角形三角比；运用三角比方法解决数学的或现实的问题。（等高线图上的两个标记之间的俯角确定）运用形体之间的关系及其属性解决数学的或现实的问题（利用四边形内角和等于360度来为建筑物框架取正，运用弧，弦，切线和圆的性质确定缺少中心的一段圆弧的圆心

Culm sheaths symmetrical, apex convexly or triangularly arched, or asymmetrically triangular

匀称，convexly 顶或者三角形拱起的竿箨，或者不对称的三角形 27

Efficient triangle and triangle intersection detection, to determine whether they are coplanar, the collision zone use.

详细说明：高效的三角形和三角形的相交性检测，判断他们是否共面，碰撞区间的使用。

The main purpose is to construct cubature formulae on an arbitrary spherical triangle. Firstly a method for accurately computing the definite integral of spherical polynomial functions on a spherical triangle is proposed.

本文主要研究定义在球面三角形上函数的数值积分，通过积分的插值多项式函数构造具有多项式精度的插值型求积公式，以及给出精确计算球面三角形上多项式函数方法。

Cupule bracts triangular, narrowly triangular, or ovate-lanceolate, adherent to outside wall of cupule.

Cupule苞片三角形，狭三角形，披针形或卵形，对在壳斗的墙外边粘性。

The prospect of quantum current stan- dard is not very clear.

这样的三角形在文献中被称为量子三角形

The mesh simplification algorithm can not only decimate the number of triangles of models but also keep the topology of models.

因此，需要删除那些对模型影响不大的三角形，保留那些能反映模型几何特征的三角形。

For example ,many sings on the road tell dirvers what to do .when you see a triangle with two chiildren crossing the road ,you must not dirve too fast because there is a school nearby,and school children may cross the road.a sign with the letter " p "means you can park here .and a triangle with an arrow means turning left or right .also at crossing, traffic lights use three different colours as sings :a red light means " stop ", an amber light means "get ready for stop" and a green light means"go ".some road signs warn us of possible danger.

它们简单易懂。比如说，很多在马路上的标记告诉司机们该做什么。当你看见一个三角形标记里面有两个小孩横穿马路的时候，你最好不要开得太快，因为附近有一个学校，学校的孩子们会横穿马路。带有"P"字的标记说明你可以在这里停车。还有带着箭头的三角形标记就意味着左转或右转。还有在十字路口，交通灯用三种不同的颜色最为标记：红灯停，琥珀色的灯意味着"准备要停下了"还有绿灯就是行的意思了。一些马路标记警告我们一些可能存在的危险。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。