1.
Of, relating to, or resembling a line; straight.
线的，直的线的、与直线有关的或象直线的；直的
2.
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
3.
out of alignment (with...)
(与…) 不成直线的
4.
A line that deviates from straightness in a smooth, continuous fashion.
曲线一条光滑并连续地偏离直线的线
5.
"curve:a line that deviates from straightness in a smooth, continuous fashion."
曲线:一条光滑并连续地偏离直线的线.
6.
a straight road, line, rod
直的路、 线、 杆
7.
Arrangement or position in a straight line or in parallel lines.
直线排列直线或平行线的排列或位置
8.
A vertical or nearly vertical line or plane.
垂直线，垂直面垂直或近似垂直的线或平面
9.
conjugate lines in a conic
二次曲线的共轭直线
10.
ideal straight line
理想直线（线性ＡＤＣ或ＤＡＣ的）
11.
down-the-line shot
沿边线打击的直线球
12.
Radio waves travel in straight lines.
无线电波是直线传播的。
13.
Something vertical, as a line, plane, or circle.
垂直物垂直的东西，比如垂直线，垂直面或垂直圆
14.
a straight line at right angles to another line.
与另一个线夹成直角的直线。
15.
The Properties of Sorgenfrey Line and R Real Line in General Topological Space;
Sorgenfrey直线和R实直线拓扑空间的性质
16.
coaxially fed linear array
同轴线馈电的直线天线阵
17.
Curve Pencil Based Intersection for Degenerated Cases of Curves
直线/NURBS曲线等基于曲线束的求交方法
18.
A line or plane perpendicular to a given line or plane.
正交线（面）一条或一个与给定直线或平面垂直的直线或平面