straight line

名词 straight line:

1. a line traced by a point traveling in a constant direction; a line of zero curvature

1. The curve traced by a point on the circumference of a circle that rolls on a straight line.
   圆滚线，摆线圆周上任一点在一条直线上滚动时所形成的曲线
2. A geometric element that generates a geometric figure, especially a straight line that generates a surface by moving in a specified fashion.
   母点，母线形成一个几何图形的几何要素，尤指通过以规定方式运动而产生一个面的一条直线
3. A surface containing all the straight lines that connect any two points on it.
   平面包含面上所有连接任意两点的直线的平面
4. In, of, describing, described by, or related to a straight line.
   直线的直线本身的、直线的、描述直线的或用直线描述的或与直线有关的