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。
That means that the gradient of f is perpendicular to the level set of g.
也就是说f的梯度向量,应该与g的水平集垂直。
v So -- So if the gradient vector is perpendicular to v OK, that's a good start.
所以梯度向量垂直于,很好，这是一个很好的开始。
When a surface is perpendicular to the rays, their intensity is at their maximum.
当表面与射线垂直时，射线的强度最大。
So, see, this coefficient becomes zero exactly when the line is perpendicular to the normal vector.
看到了吧，系数变为0了，当直线垂直于法向量的时候。
Consider a ball that is spinning about an axis perpendicular to the flow of air across it (see left).
观察一个旋转轴与空气流动方向垂直的足球(见上图)。
The end surface of the claw is a machining positioning surface which is perpendicular to the central pin.
所述的卡爪端面是加 工定位面，所述的中心销与定位面垂直。
Well, at point P, the velocity vector QP is perpendicular to the line QP, 1 so the sine of that angle is one.
点P，速度向量,垂直于直线，所以该角的正弦值为。
The long axis of the house is perpendicular to the axis of the peninsula, aligning it with sunrise and sunset.
住宅长长的轴线与半岛的轴线互相垂直，它使住宅与日出日落连成一线。
The direction which is the most susceptible to horizontal earthquake action is perpendicular to the bridge axis.
水平地震作用的最敏感方向垂直桥的轴线。
Then ending line is perpendicular to the orientation line and passes through one of the corners of the rectangle.
还有结束线也垂直于方向线，并且通过矩形的其中一个角。
The microstructure of the ceramic layer is columnar and its growth direction is perpendicular to the substrate surface.
陶瓷熔覆层的组织为柱状晶。其生长方向与基体表面垂直。
The free end of the connecting plate (40) is arranged wit a flanging (50) which is perpendicular to the connecting plate.
连接板(40)的自由端设有垂直于该连接板的折边(50)。
Each facet of the grating is perpendicular to the center of facet and the connection lines for input waveguide end points.
光栅的每一个齿面都垂直于齿面中心和输入波导端点的连线。
The vibration direction resulted from the S-wave is perpendicular to the plane, which is received by the probe for P-wave.
横波引起的质点振动方向垂直于岩块表面，可以由纵波探头接收。
I mean we'd seen in last time, but the gradient is perpendicular to the level and points towards higher values of a function.
我的意思是，上一次我们讨论过了，这个梯度是垂直于等高线，并且是指向方程增长的方向的。
And there is much more phase delay, when the fabrication excursion is perpendicular to the incident wave polarized direction.
当装配偏移方向与入射波极化方向正交时，出现较大相位延迟。
That is a property of the circle that the radial direction is perpendicular to the circle. Actually, let me complete this picture.
这不过是圆的性质——径向垂直于圆，我来画完这张图吧。
The pin fits snugly in a reamed tapered hole that is perpendicular to the shaft axis and either radial or tangential to the shaft surface.
该引脚正好符合了扩锥孔的垂直轴的轴线，要么径向或切向轴表面。
Radial imperfection. A radial imperfection may be defined as any imperfection whose vertical axis is perpendicular to the material surface.
径向缺欠。径向缺欠可定义为其纵轴垂直于材料表面的任何缺欠。
The cave's initial principal stress is tectonic stress, and the Max main stress's direction is perpendicular to the power house's stalk line.
洞室地应力以构造应力为主，其最大主应力方向与厂房轴线方向近垂直。
We know that the gradient is perpendicular to this vector that's tangent to the level surface What about other vectors tangent to the level surface?
我们知道梯度向量垂直于这个向量，而速度向量是相切于等值面的，其他相切于等值面的向量，又如何呢？
The direction of longest echo time is the direction of minimum earth stress, and the direction of greatest earth stress is perpendicular to it.
回波时间最长的方向为最小地应力方向，最大地应力方向与之垂直。
The gnomon in the middle is perpendicular to the plate, parallel to the earth's axis, and points to the celestial North Pole (near the north Star).
晷针垂直于晷盘，平行于地轴，指向天北极(北极星附近)。
The band-like texture is formed in the liquid crystalline solution after shearing and the band direction is perpendicular to the shearing direction.
在受到切应力作用后，液晶溶液形成条带织构，条带的方向与应力方向垂直。
The stability is studied of a current sheet with a sheared flow in a gravitational field which is perpendicular to the magnetic field and plasma flow.
本文研究了在垂直于磁场和等离子体流动的重力场中具有剪切流动的电流片的稳定性。
When sound wave is perpendicular to the main measure quadrant of sound-electronic transducer, the most strong sound-electronic voltage will be produced.
当声波与声-电转换器的主要测象限垂直时，其声波在主要测象限内产生的声-电电压最强。
Also, if this setup doesn't coincide with the position of the sun, then it can be rotated 90 degrees and mounted so that it is perpendicular to the roof peak.
如果这个装置跟太阳的方位不一致，那么，可以把它旋转90度与屋顶垂直，然后再安装。
Also, if this setup doesn't coincide with the position of the sun, then it can be rotated 90 degrees and mounted so that it is perpendicular to the roof peak.
如果这个装置跟太阳的方位不一致，那么，可以把它旋转90度与屋顶垂直，然后再安装。
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