垂线

垂线 [chuí xiàn]

1. ■ （与另一条直线或平面相垂直的直线） perpendicular; vertical; {数} vertical line; perpendicular line

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常用词组

1. ■ 垂线变化 variation of vertical;

2. ■ 垂线尺 plumb rule;

3. ■ 垂线法 normal line method;

4. ■ 垂线偏差 deviation of plumb line;

5. ■ 垂线曲率 curvature of the plumb line;

6. ■ 垂线铊 plummet;

7. ■ 垂线足 point of intersection of a vertical line and a horizontal line or a plane;

8. ■ 垂线坐标仪 plumb line coordinator