查询词典 area of a circle

Do you know how to calculate the area of a circle?

你知道怎样计算圆的面积吗？

What is the area of a circle whose diameter is 4 inches?

一个直径是4英寸的园，它的面积是多少？

To further understand the concept of a circle, distinguish the perimeter and the area of a circle..

进一步熟记圆的概念，区分圆的周长和面积。

Further study the names of all the parts of a circle and how to work out the perimeter and the area of a circle.

复习圆的有关知识，进一步熟悉了圆各部分的名称，以及圆周长和面积的计算方法。

He remembers from his school days that the area of a circle is proportional to the square of its radius, and expects that in the case of a uniform distribution, the number of stations counted should increase like the sequence of number 1, 4, 9, 16, and so on.

他记得他学生年代的时候，一个圆形区域的面积和它的半径的平方是成比例的，所以他认为在均匀分布的情况下，汽油站的数目应该以1，4，9，16等等这种数列增加。

Student: The size of the plane which a circle occupies is called the area of a circle.

生：圆所占平面大小叫做圆的面积。

Vb6.0成功测试-A program used to calculate the area of a circle.

一个用vb实现的求圆面积的程序。

It is impossible to write a program without knowing algorithm. For example, to calculate the circumference and area of a circle, you should know the formulas "circumference＝2лr' and "area = 7лr2'.

不懂算法就不可能编写程序，例如，要计算圆的周长和面积，你要知道"圆周长＝27rr"和"圆面积＝，rr2"的公式。

The method of area ratio,the area of a circle in sample plot to the whole area of the circle, in which the distributing point is the center and the scale distance is the radius,is defined as the weighted coefficient of edge correction in this paper.

将边缘效应的权重值定义为以分布点为圆心，尺度距离为半径作圆，圆在样地内的面积部分与整个圆面积之比。

The present invention provides a direct-type backlight having: a resin sealing member including at least one resin layer, which has a light reflecting section formed on the outermost surface of the resin sealing member; an optical semiconductor element sealed by the resin sealing member; and plural circular light scattering grooves formed concentrically on at least one surface of the resin layer, wherein an area of a circle in the center and an area among the respective concentric circles are substantially the same.

本发明提供了一种直下式背光，包括：树脂密封元件，其包含有至少一个树脂层，该树脂层具有形成在所述树脂密封元件最外表面上的光反射部分；由所述树脂密封元件密封的光学半导体元件；和以同心圆形式形成在所述树脂层至少一个表面上的多个圆形光散射凹槽，其中在中心的圆的面积与在各个同心圆之间的面积大致相等。

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。