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1·Are the lines perpendicular to each other?

这些直线相互垂直吗？《牛津词典》

2·The left wing dipped until it was perpendicular to the ground.

左翼下垂至与地面成90度角。《柯林斯英汉双解大词典》

3·Let AB be perpendicular to CD.

设ab垂直于CD。《新英汉大辞典》

4·When a surface is perpendicular to the rays, their intensity is at its maximum.

当表面与射线垂直时，射线的强度最大。《新英汉大辞典》

5·So, it's perpendicular to my curve.

它垂直于曲线。

6·The surface is perpendicular to gravity.

它们平面垂直于重力。

7·should be perpendicular to the level set.

必须与水平集垂直。

8·And the force is perpendicular to the arm.

力是垂直于杆。

9·So it's still perpendicular to the same plane.

所以这个外积还是垂直于同一个平面。

10·And it will still be perpendicular to the curves.

它还是垂直于那些曲线。