The left wing dipped until it was perpendicular to the ground.
左翼下垂至与地面成90度角。
Let AB be perpendicular to CD.
设ab垂直于CD。
The surface is perpendicular to gravity.
它们平面垂直于重力。
should be perpendicular to the level set.
必须与水平集垂直。
And the force is perpendicular to the arm.
力是垂直于杆。
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。
The wall must be perpendicular to the floor.
墙壁必须与地板成直角。
The two lines are perpendicular to one another.
这两条线相互垂直。
Pasterns firm and almost perpendicular to the ground.
脚腕结实、与地面垂直。
Well, it's the direction that's perpendicular to this plane.
它其实是朝垂直于平面的方向。
You might be able to draw curves that are perpendicular to it.
或许你可以画出每点都垂直于向量场的曲线。
The cold ends are attached perpendicular to the hot zone.
冷端部和发热部垂直相连。
And then there is the normal force perpendicular to the surface.
这个力，垂直于斜面。
So, how do we find this vector that's perpendicular to the plane?
所以，我们要怎么找，垂直于这个平面的向量？
The force is always perpendicular to the direction of motion.
因为这个力总是垂直,于运动的方向。
The lighter should sit perpendicular to the neck of the bottle.
打火机应该与瓶颈垂直。
And so it was rotating like this and was perpendicular to the disk.
它这样旋转，垂直于圆盘。
The plumB line is always perpendicular to the horizontal plane.
铅垂线总是垂直于水平面的。
However, this elliptical image is perpendicular to first image.
但这次的成像与前一次的垂直。
We have seen that the gradient is perpendicular to the level surface.
我们已经知道，梯度是垂直于等值面的。
Z points toward the sky and is perpendicular to the ground plane.
值朝向天空方向，与地面垂直相交。
The church stands perpendicular to the neighborhood's main street.
教堂与相邻的主街道垂直。
Do you mean how do I know that it is perpendicular to a level curve?
你想问的是，我如何知道它是和等高线垂直的吗？
I mean when I say up, of course it is still perpendicular to the surface.
当我说向上时，它当然仍是垂直曲面的。
The plane perpendicular to another line or plane through the origin.
与已知直线或平面垂直的平面；
Then you know that the gradient of g is perpendicular to the level surface.
那么就知道了g的梯度,是垂直等值面的。
Above, the camera is placed perpendicular to the train pavilion bridge.
上图中，相机的摆放与火车站的天桥垂直。
And I will call this direction y, as I always do perpendicular to the surface.
照惯例把垂直方向，设为y方向。
Perpendicular to the tongue of land, the buildings directly face the water.
建筑物就矗立在这部分延伸的地块上，面朝河水。
Now, there's two different possible directions that are perpendicular to a plane.
现在，垂直于同一个平面的，有两个方向。
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