Now, how do we get this unit vector?
那我们怎么得到这单位矢量呢？
OK, so if I give you a unit vector, you can ask yourself, if I move in the direction, how quickly will my function change?
也就是，如果我给你一个单位向量，试问，我沿着这个方向移动，我的函数值会变化得多快呢？
That is our convention to get a unit normal vector that points to the right of the curve as we move along the curve.
这是约定的得到单位法向量的方法，这种做法使得，当沿着曲线行进时，法向量始终指向右手方向。
Now, another useful notion is the unit vector to the trajectory.
还有一个有用的概念就是轨道的单位矢量。
It has a hat because it's a unit vector, and t because it's tangent.
这上面有一个帽子表示它是单位矢量，T表示它是切线。
On vector processors a register is treated both as a single unit and as multiple units.
在向量处理器上，寄存器可以作为一个单元进行处理，也可以作为多个单元进行处理。
它不是单位向量。
Well, if I take the vector field that was in the problem set, and if I do things, say that I look at the unit circle.
如果找一个这个问题中的向量场，然后我们要做的是，假设这个单位圆。
Remember that was the vector field that looked like a rotation at the unit speed.
我们记得，这是个以单位速度旋转的向量场。
It's the unit vector in the vertical direction.
即竖直方向的单位向量。
So, I'm going to draw it in red. OK, so that's a unit vector that goes along the curve, and then the actual velocity is going to be proportional to that.
现在画成红色，这就是，沿曲线的单位速度向量，实际中的速度向量与它成比例的。
You'll see why very soon, in such a way that the derivative is this given unit vector u hat.
你很快就会明白为什么,导数dr/ds等于给定的单位u向量。
Suppose A itself is the unit vector in the y direction B Then A dot B is what?
假设A是y方向上的,单位矢量,则是z方向上的单位矢量。，and，B，is，the，unit，vector，in，the，z，direction。,那A点B是多少呢？
So, that means this actually should be the unit vector.
这意味着这一项就是单位向量。
And that is, in general, not a unit normal vector.
这通常不是一个单位法向量。
Now, let's multiply that by the unit normal vector.
现在用单位法向量乘以那个。
Now, if you wanted the unit normal vector to compute flux, then you would just scale this guy down to unit length, OK?
如果想用单位法向量来计算通量，还得先把它标准化到单位长度？
The orientation of disturbance factor vector is the same as that of vector of material unit stress.
扰动因子向量的方向与材料单元体应力主方向相同。
This article presents the unit vector method for the full shaking force balancing of multi-loop spatial linkages.
本文提出了多环空间连杆机构摆动力完全平衡的单位向量法。
The terminal sliding mode controller is designed by using unit vector style, and it suits the uncertain elements whether it satisfies the matching condition or not.
采用单位向量控制形式的最终滑动模态控制器，对满足匹配条件和不满足匹配条件的不确定性均适用。
A new control algorithm is proposed in this paper. That is the unit vector with a integral corrective term adaption law.
本文提出了一种自适应控制算法：单位向量加积分校正自适应算法。
Kalman filtering method is widely used in data adjustment of dynamic surveying system, whose unit variance is usually computed with innovation vector of parameters and residual vector of observations.
卡尔曼滤波方法已广泛应用于动态测量数据的处理，其单位权方差通常按新息向量和观测值的残差向量进行计算，增加了观测值残差向量的计算。
An instance proved method of dynamic fussy symptom vector is efficient to solve the problems of symptom updating and unify of symptom value and unit.
实例表明，动态模糊征兆向量方法能有效地解决智能诊断中征兆的更新与征兆数值、单位的统一问题。
In the present paper, we mainly study the codimension reduction problems for submanifolds with parallel unit mean curvature vector in a sphere.
本文将着重研究更为一般的具有平行单位平均曲率向量子流形的有关几何问题。
With the help of the vector method, the general expressions for the displacement, velocity and acceleration of the polished nod on the swing horsehead pumping unit(SHPU)was introduced.
用矢量法导出了旋转驴头式抽油机悬点运动的位移、速度和加速成度的表达式。
It is the basic function for GIS to get unit polygon by overlaying the vector map, but the uncertainty of polygon is the disastrous factor affecting GIS's data quality.
用矢量基础图件叠加来获取单元图斑的方法是GIS的基本功能，但叠加多边形的不确定性成为影响GIS数据质量的灾难性因素。
The data processing unit using VLIW and SIMD vector structure is the key of the architecture.
数据处理单元是结构的核心，采用VLIW加SIMD向量结构。
How to choose appropriate unit vector to establish new inequalities.
如何选择合适的单位向量来创建新的不等式。
Taking engineering as unit, united spatial base being supplied, vector-grid basic spatial data was managed wholly.
以工程为单位，在统一空间基底的前提下，对矢量栅格基础空间数据进行一体化管理。
Taking engineering as unit, united spatial base being supplied, vector-grid basic spatial data was managed wholly.
以工程为单位，在统一空间基底的前提下，对矢量栅格基础空间数据进行一体化管理。
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