| 单词 | 线段 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔axis〕An unlimited line, half-line, or line segment serving to orient a space or a geometric object, especially a line about which the object is symmetric.轴：用于给空间或几何体定位的无限直线、射线或线段，特别是关于对称物体的线美国传统〔chord〕A line segment that joins two points on a curve.弦：将两点用曲线连接起来的曲线段美国传统〔diameter〕A straight line segment passing through the center of a figure, especially of a circle or sphere, and terminating at the periphery.直径：穿过一图形，特别是圆形或球形的中心到圆周结束的直线段美国传统〔directed distance〕A segment of a line having an indicated positive sense.正线段：一条直线中显示正方向的线段美国传统〔endpoint〕Either of two points marking the end of a line segment.端点：标记一条线段两端的两点中的任何一点美国传统〔interval〕Mathematics A line segment representing all the numbers between a pair of given numbers and including one, both, or neither of the endpoints.【数学】 区间段：代表一对已知数之间包括一个或两个端点、或不包括端点的所有数的一直线段美国传统〔midpoint〕Mathematics The point of a line segment or curvilinear arc that divides it into two parts of the same length.【数学】 中点：一条线段或一段弧上的一点，该点将此线段或弧平分为等长的两部分美国传统〔polygon〕A closed plane figure bounded by three or more line segments.多边形；多角形：由三条或更多的线段围成的一个封闭的平面图形美国传统〔radius vector〕A line segment that joins the origin and a variable point in a system of polar or spherical coordinates.矢径：在一个极面或球面坐标系中连接一个固定点与一个动点的线段美国传统〔radius vector〕The length of such a line segment.矢径长度：这种线段的长度美国传统〔radius〕A line segment that joins the center of a circle with any point on its circumference.圆半径：将圆心与圆周上任一连接起来的线段美国传统〔radius〕A line segment that joins the center of a regular polygon with any of its vertices.将正多边形的中心与它的一任一顶点起的来的线段美国传统〔radius〕A line segment that joins the center of a sphere with any point on its surface.球半径：将心与球面上任一点起来的线段美国传统〔radius〕The length of any such line segment.半距离：这种线段的长度美国传统〔scale〕A calibrated line, as on a map or an architectural plan, indicating such a proportion.比例尺：在地图或建筑上表示这种比例的标有刻度的线段美国传统〔segment〕The portion of a line between any two points on the line.线段：线上任意两点间的部分美国传统〔triangle〕The plane figure formed by connecting three points not in a straight line by straight line segments; a three-sided polygon.三角形：一种由直线线段连接不在一条直线上的三点形成的平面图形；三边图形美国传统 |
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