| 1. | It forms a right angle with the equator .
它与赤道成直角。 |
| 2. | The two lines meet at right angles .
两线垂直相交。 |
| 3. | An axial electron pair meets at right angles with 3 neighboring pairs .
轴向电子对与三个相邻的电子对相交成直角。 |
| 4. | The special case in which the specified directions are at right angles to each other is of particular importance .
分量的方向互为垂直的特殊情况是十分重要的。 |
| 5. | Dynamic evaluation is used to determine the motion in a direction at right angles to the observation direction .
动力学的计算，是用来确定与观察方向相垂直的运动。 |
| 6. | Light enters and leaves at right angles to the hypotenuse and is reflected at each of the shorter faces .
光垂直地入射和出射于棱镜的斜面，而在每一个较短的面上反射。 |
| 7. | A current is sent transversely through the liquid metal, in a direction at right angles to a transverse magnetic field .
使电流横穿过液态金属，其方向又与横向磁场垂直。 |
| 8. | The two vanes are at right angles in plan, and each is either all shaded or all in sunlight .
上、下两块觇板在一平面图上相交成直角，每块觇板全是阴暗的，或全被阳光照射。 |
| 9. | His plan is to drop perpendiculars from each point of the curve upon two planes intersecting at right angles .
他的计划是：从曲线的每个点处作线段垂直于两个互相垂直的平面。 |
| 10. | Bisecting that at right angles, is lundy on that side
平分那个直角,朗迪在这边 |
