查询词典 Bermuda Triangle

Note that this ratio does not depend on the particular right triangle chosen, as long as it contains the angle A , since all those triangles are similar.

把直角三角形的弦放在直径上，股就是长的弦，即正弦，勾就是短的弦，即余下的弦——余弦。

In this paper,three problems are researched.First,a method for recognizing triangle and quadrangle is introduced based on geometry and angle constraint.Then Attribute Relation Graph is employed to describe simple polyhedron and line drawing.

依据投影几何中的距离约束和角度约束，给出了三边形和平行四边形的识别方法；提出用属性关系图表示平面立体和线图，该描述方法是一种结合表面特征和几何特征的方法。

This function can generate sine wave, triangle wave.

详细说明：该函数可以产生正弦波，三角波。

After several years analysis and research in practice,this paper uses approximate equilateral triangle method,by the way of sine theorem,last according to tagent formule to calculate the REM ,this method is ssimple,its accuracy is high,the method applies to any circumstance to measure REM .

本文经过实践多年分析研究，采用近似正三角形法通过正弦定理、长边推短边，最后按正切公式让算获得悬高，方法简便，精度高，适用于任何条件下的悬高测量。

It can measure the sine wave, square wave, triangle wave frequency.

它可以测量正弦波、方波、三角波的频率。

Can show that the sine, square and triangle wave, etc.

一个基于VC编写的波形显示控件的源程序。

It can produce sine, square, triangle wave, or even arbitrary waveform.

它可以产生正弦波、方波、三角波，甚至任意波形。

The part of a historical period is single, be born on stem tuber, petiole grows 8 ～ 25cm, constant purple or green have violet spot, in mid and the following give birth to one bead bud; Form of form of egg of shape of blade long circle, egg of long triangle shape or form of heart shape halberd, grow 20cm of 5 ～, wide 3 ～ 8cm; Tip is long gradually pointed or submit end form sometimes, base form of ministry deep heart, often be above sinuosity have 1 bead shoot, above green, often take below lilac, whole reason, side arteries and veins feather shape, combination is in in close brim.

叶单一，生于块茎上，叶柄长8～25cm，常紫色或绿色具紫斑，在中部以下生一珠芽；叶片长圆状卵形。长三角状卵形或心状戟形，长5 ～20cm，宽3～8cm；先端长渐尖或有时呈尾状，基部深心形，常在弯曲处上面有1珠芽，上面绿色，下面常带淡紫色，全缘，侧脉羽状，在近边缘处联合。

It can control and graduate sinusoidal curve and triangle wave curve by using axis servo valve.

通过采用轴伺服阀，可实时控制并产生正弦曲线和三角波形曲线。

The sum of the interior angles of a triangle with paper, card , sketchpad and so on in groups.

学生分组，用事先准备好的三角形的纸片、卡片、几何画板软件进行探究：三角形的内角和。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？