1.
They sometimes look like cobwebs, worms, rings, dots, or specks.
类似蜘蛛网，虫子，环，圆点及斑点。
2.
Click on the center dot to rotate the hand around the action line.
点击中心圆点，沿着作用线旋转手臂。
3.
diameter of top circular-arc juncture circle
齿顶圆弧衔接点圆直径
4.
diameter of tip circular-arc juncture circle
齿尖圆弧衔接点圆直径
5.
diameter of root circular-arc juncture circle
齿根圆弧衔接点圆直径
6.
A plane curve everywhere equidistant from a given fixed point, the center.
圆，圆形从定点（圆心）等距离到任一点的平面曲线
7.
That point falls on the circumference of the circle.
那一个点落在这圆的圆周线上。
8.
Let us draw the circle with center at O and radius equal to a.
我们以点O为圆心，以a为半径，作圆。
9.
The strokes are of the same width, beginning and ending with a circle.
字的点划均为线条，粗细一致，圆起圆收。
10.
binodal cyclide
双结点四次圆纹曲面
11.
The line cuts the circle at two points.
一直线与圆相交於两点.
12.
a round arch drawn from a single center.
只有一个中心点的圆拱。
13.
computer point scree
电脑布点的圆网,计算机布点的圆网（用于点布涂层技术）
14.
a line generated by a point on a circle rolling around another circle.
一个圆上的某点在该圆旋转另一个圆时产生的线。
15.
Each step of the construction of a circle with straightedge and compass calls for finding a point of intersection.
用圆规、直尺作圆的每一步都需要找一个交点。
16.
The double continuation itself is then carried out by drawing a series of circles about this point.
接着进行成倍延拓，以该点为圆心，画出一系列圆。
17.
An Accurate Solution of the Furthest Right Point of the Pro-cut Line of Taper & Column;
圆锥、圆柱正交相贯线最右点的准确求法
18.
Definition: A strophoid of a circle with the pole O at the centre of the circle and the fixed point P on the circumference of the circle.
定义：在圆上的环索线，以圆心为极点，圆周上的一点为固定点，所作出的图形！