The paths of incidence and reflection are in a plane normal to the surface.
入射和反射的路径都在与表面垂直的平面内。
You can imagine superimposing a sphere on the image above, and then taking a plane normal to the point of interest.
你可以想象叠加就上述领域的形象，然后以正常的飞机的兴趣点。
A comprehensive study of free vibration, buckling and bending of anisotropic simply-supported skew plates subjected to in-plane normal and shear forces is conducted.
对简支各向异性平行四边形板在面内张力和剪力作用下自由振动、屈曲和弯曲问题作了全面的研究。
The plane had to deviate from its normal flight path.
那架飞机只好偏离正常的航线。
When we know two vectors in a plane, it let us find the normal vector to the plane, and that is what we need to find the equation.
当我们已知平面上的两个向量，我们就可以找到，这个平面的法向量，然后我们就可以用法向量来找到方程。
He knew a normal plane made of aluminum metal could not make a trip around the world without adding fuel.
他知道一架普通的铝制飞机无法不加油环绕世界。
OK, the best way to it, now that we have the gradient vector, is actually to directly say oh, we know the normal vector to this plane.
最好的方法是，既然我们已经有了梯度向量，就可以直接说,我们知道了切平面的法向量。
And, we know how to find a normal vector to this plane just by looking at the coefficients.
我们已经知道，如何根据系数找到这个平面的法向量。
It's the dot product between the normal vector of a plane and the vector along the line.
这是平面法向量，和沿直线向量的点积。
OK, and that's going to be the normal vector to the surface or to the tangent plane.
这就是切平面的，或者说这个曲面的法向量。
Map projection in cartography is a way to present a two-dimensional curved surface on a plane, such as a normal map. Figure 2 shows a Traverse Mercator projection.
绘图法中的地图投影方法可以在平面中表示一个两维的曲面，例如一个标准地图。
The low-pollution plane to carry between 50 and 100 passengers will take off using normal engines powered by biofuel made from seaweed before switching on its rocket engines at altitude.
该低污染的飞机可以搭载50到100名乘客，起飞时飞机使用从海藻中提炼的生物燃料驱动的常规引擎，当爬升到特定高度时，飞机会切换到火箭引擎。
Another way to do it, of course, would provide actually parametric equations of these lines, get vectors along them and then take the cross-product to get the normal vector to the plane.
当然也有另一种方法，就是用参数方程表示这两条直线，用两条直线的方向向量作外积，从而得到切平面的法向量。
Any plane actually has infinitely many normal vectors.
每一个平面都有无数条法向量。
And then get this equation for the plane using the normal vector.
然后利用法向量得出切平面的方程。
One thing that's on this picture that I haven't drawn down is the normal vector to the plane.
图上有个东东我没画,就是这个平面的法向量。
But, when it comes to looking for the normal vector, be rest assured that the normal vector to a horizontal plane is just vertical.
但是在寻找法向量时，可以确定法向量与水平面垂直。
If you have a plane, ax+by+cz=d then the normal vector would just be .
如果你有一个平面，，，ax+by+cz=d，那么法向量就是。
Sandstorm weather often affect traffic safety, causing the plane could not normal take off or land, make the car, train carriages derailed lines or damaged, glass.
沙尘暴天气经常影响交通安全，造成飞机不能正常起飞或降落，使汽车、火车车厢玻璃破损、停运或脱轨。
Recently, some passengers said, buy the same Airlines round-trip ticket, but did not catch the plane trip, return ticket can not use the normal.
近日，有旅客表示，购买同一航空公司的往返套票，但没赶上去程飞机，返程机票也无法正常使用了。
Airline officials said the plane then restored to normal.
航空公司高级官员称，飞机随后恢复了正常。
For that I created a normal plane in the middle of the grass part and in edit poly mode selecting the edges I began to extrude and adjust the terrain to fit with the grass parts.
这样我就在草坪中间创建了一个标准的平面图，在编辑多边形中选择边缘，开始挤压并调整地形，使其和草坪部分保持一致。
Key points: application of the direction vector of a line and the normal vector of a plane.
重点：直线的方向向量与平面的法向量的应用。
Purpose To analyse the characteristics of mandibular incisor point chewing movement on frontal plane orbit in youth of normal occlusion.
目的分析正常(牙合)青少年下颌切点额状面咀嚼运动轨迹的特征。
That's right. It's normal if you don't often take the plane. Just relax a little bit.
那就对了。如果你不是经常乘坐飞机这就是正常的。放松点。
It's normal if you don't often take the plane. Just relax a little bit.
如果您不是经常乘坐飞机，这是很正常的。放松点。
Normal rolling sheets have obvious preferred grain orientation and basal plane (0002) is parallel to the rolling plane.
常规轧制板材具有明显的晶粒择优取向，大部分晶粒的(0002)基面都平行于轧板表面。
It has a super jet that will allow the plane to land on a normal runway or completely vertically!
它有一个超级喷气式客机，将允许飞机降落在跑道正常或完全垂直！
It has a super jet that will allow the plane to land on a normal runway or completely vertically!
它有一个超级喷气式客机，将允许飞机降落在跑道正常或完全垂直！
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