在图形的绘制模块中又可以分成七个小的模块：直线、虚线、圆和圆弧、椭圆及椭圆弧、样条曲线。
Drawing module is divided into seven small modules: dash, line, rectangle, circle, arc, ellipse and bezier.
还要注意，不是使用简单的circle元素，我使用一个具有椭圆弧形的path创建了圆，所以火箭有了一个具有起点和终点的路径。
Also note that instead of the simpler circle element, I have created the circle using a path with elliptical arcs, so the rocket has a path to follow with a beginning and an end.
在购买的时候，用户必须检查钨钢件导线板的尺寸和线槽的精度、光洁度，特别是和线轮接触的圆弧部分的圆度。
At the time of purchase, the user must check the slot size and a wire board tungsten steel precision, smoothness, especially with the line wheel and the arc part of roundness.
一个模糊圆弧由一条简单曲线段和该曲线段的圆度函数共同给出。
A fuzzy arc is given by a simple curve and its circularity function.
非圆曲线轮廓是机械零件常见的轮廓要素之一，绝大多数数控机床只具备直线插补和圆弧插补功能。
Non-circle curve is one of familiar outlines, but most numerical control machine tools only have linear interpolation and circular interpolation.
机械零件一般由直线和圆弧组成，因此，直线和圆的检测是零件图像测量的重要部分。
Mechanical parts are generally composed of straight lines and arcs, therefore, the detection of linear and circle is an important part of the image measurement of components.
圆弧和圆是工程图形中的重要图元，已有多种识别算法，可分为两种：逼近法和直接法。
The scanning input and recognition of engineering drawings is a key step in CAD, and is to reuse lots of engineering drawings.
圆弧和圆是工程图形中的重要图元，已有多种识别算法，可分为两种：逼近法和直接法。
The scanning input and recognition of engineering drawings is a key step in CAD, and is to reuse lots of engineering drawings.
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