And we looked at the component of a vector field in the direction that was normal to the curve.
我们研究的是，向量场在曲线法向量方向的情况。
And let's take my favorite curve and compute the line integral of that field, you know, the work done along the curve.
对我喜欢的曲线，计算其上的线积分，在这条线上所做的功。
Remember not so long ago we looked at flux of a two-dimensional field of a curve.
记得之前我们曾经学过，二维空间中曲线的通量。
If you were thinking of a velocity field, that would measure how much fluid is passing through the curve in unit time.
想象一个速度场，它能够度量，单位时间内流体的量。
So, one of them says the line integral for the work done by a vector field along a closed curve counterclockwise is equal to the double integral of a curl of a field over the enclosed region.
其中一种说明了，在向量场上，沿逆时针方向，向量做的功等于，平面区域上旋度F的二重积分。
But it could be that, well, imagine that my vector field accidentally goes in the opposite direction then this part of the curve, while things are flowing to the left, contributes negatively to flux.
的确有可能出现往两个方向流动的情况，可以想象到，这一小部分往相反方向流动，当流体向左流时，就只能算作负值了。
The invention relates to a method of the clinical gene chip quantitative measurement for manufacturing a standard curve, and the method belongs to the biological technology field.
本发明涉及一种可制作标准曲线的临床定量检测基因芯片方法，属于生物技术领域。
Dealing with the calculation results of the temperature field of the motor stator, we obtain the temperature distributed diagram at not same segment, and the temperature rising the curve of any node.
通过对该电机定子温度场计算结果的后处理，得出了该电机定子运行在不同时间段里的温度分布图，以及该电机定子壳体任一节点的温升曲线。
In this paper, the theoretical and technical bases of NURBS curve and surface are mainly discussed. Its engineering application and practice in the field of CAD are also researched.
本文论述了自由曲面(NURBS曲线和曲面)的理论和技术基础，并对其在CAD领域的工程实际应用进行了研究和探索。
In addition, for analyzing the relation between the magnetocrystalline anisotropy energy and the temperature, the curve of the temperature dependence of molecular field intensity were plotted.
另外，为了便于分析磁晶各向异性能与温度的关系，本文还给出了分子场强度随温度变化的曲线。
In recent years, ellipse curve as mathematics foundation is applied in opening code system, which causes more attention in the field of communication security.
近年来，椭圆曲线作为公开密码体制的基础，已引起了通信保密领域内的广泛关注。
Measurements of stray field within the plasma region and magnetizing curve of the iron core were made in a model device with variation of air gap size and under load and unload discharge conditions.
模拟实验给出了不同气隙情况下，空载和负载放电时，等离子体区的杂散场和铁芯磁化曲线测试结果。
In this article, the influences of the mode field diameter, the cutoff wavelength and the relative refractive index difference on the OTDR curve are also verified.
文中还验证了单模光纤的模场直径、截止波长、相对折射率差对OTDR曲线的影响。
The article introduces the concepts of point matrix and field matrix and the application of transfer matrix method to structural analysis of curve bridge.
文章介绍点矩阵和场矩阵的概念以及传递矩阵法在曲线桥结构分析中的应用。
Through a calculation for Xiangguosi gas field, it is shown that this increase curve is of great useful value in practice.
相国寺气田的计算实例表明这种增长曲线实际应用的重大价值。
In the data analyzing, I both do some research of the similitude analyzing of data curve and data field.
在对数据的处理中，分别研究了波形的相似性处理和数据场处理思想。
The calculation has provided that in the nonuniform flow field the curve of pitching moment may be distorted.
计算证明在非均匀流场中俯仰力矩曲线可能发生畸变。
UDEC simulation results show that the porosity of overburden rock fissure field in goaf and its curve is saddle-shaped.
UDEC模拟结果表明，采空区覆岩裂隙区域孔隙率曲线呈鞍状分布。
Tapered beam of a steel portal frame is numerically simulated by the finite element method, and the changes of temperature field under the ISO time-temperature curve and local fire are obtained.
采用有限元法对门式钢刚架结构中的变截面梁进行了数值模拟，分别得到其在ISO标准升温曲线和局部火灾下的温度场变化，考察了升温曲线及火源位置对变截面梁升温的影响。
The new achievement of CAGD field has been introduced to build up the mathematical model of vehicle body appearance curve and surface.
本文引入CAGD领域研究的新成果构造车身外形曲线曲面数学模型。
It calculates the cutoff wavelength and single-mode bandwidth at the change of the ridge dimensions, gives the dominant mode field pattern and the corresponding curve of the deformation vs.
计算了脊的尺寸变化时的截止波长和单模带宽，给出了主模场结构图以及变形对截止波长和单模带宽影响的关系曲线，并分析了传输特性随对称脊波导结构尺寸变化的情况。
Through several typical calculating-examples, the methods of solving space distance and curve, and entity inertia by three-dimensional technology in engineering-design field were explained.
通过若干经典算例，说明在工程设计中利用三维技术求解空间距离、空间曲线以及实体惯量的方法。
Magnetic field curve distortion is found at the position of magnetic pole edge in Hall effect experiment, using HL-5 Hall effect testing instrument.
在利用HL-5霍尔效应测试仪测量磁场的实验中，发现有些仪器的测量曲线在磁极边缘附近存在畸变。
The safety of this protocol is based on the elliptic curve discrete logarithm of non-supersingular elliptic curve over finite field, on which there has been no efficient attack method up to now.
协议的安全性是建立在目前尚未存在有效攻击方法的有限域上非超奇异椭圆曲线的椭圆曲线离散对数问题之上的。
In this paper, the author tried to apply the principle and the method of underground stress obtained by hydrofracture construction curve to the development of Daqing oil field.
本文把水力压裂施工曲线求地应力的原理和方法运用到大庆油田开发中去。
During the early stages of field development, simpler methods of assessment such as stored heat calculation decline curve analysis or lumped parameter models are useful.
在热田开发早期，较简单的评价方法是有用的如：热储计算法、衰减曲线分析法或集中参数模型等。
In general, the dynamic math model of a thermal process is an approximate transfer function obtained from step response curve which is figured through field experiment.
热工过程的动态数学模型通常通过现场试验作出它的阶跃响应曲线，然后从阶跃响应曲线得出近似传递函数。
This paper, firstly introduces the elliptic curve in finite field and algebraic law of its point group, gives the order of the group.
该文首先介绍有限域上定义的椭圆曲线及点群运算规则，给出椭圆曲线点群的阶。
The paper introduces the concept of curve following turnout branch line, the confirmation of head and end, the chord offset calculation of points, the measuring steps in the field.
文章介绍了道岔附带曲线的概念及头尾的确定，各各点支距的计算和现场测设步骤，并确定了拨道整正方法。
The paper introduces the concept of curve following turnout branch line, the confirmation of head and end, the chord offset calculation of points, the measuring steps in the field.
文章介绍了道岔附带曲线的概念及头尾的确定，各各点支距的计算和现场测设步骤，并确定了拨道整正方法。
应用推荐