QGIS handles all three — raster, vector, and database — a state of affairs that took considerable effort for programmers writing GIS data programming libraries.
QGIS处理所有三种数据——栅格数据、矢量数据和数据库，这也是编写GIS数据编程库的程序员的重要努力方向。
We have three conditions, F= so our criterion -- Vector field F equals .
有三个条件，因此我们的标准，向量场。
A And now I'm going to rewrite vector a in terms of the three components that we have here.
下面我要来重写一下矢量，用这里的，三个分量来写。
Each of the calls to one of the Vector methods — three calls to add and one to toString — requires acquiring and releasing the lock on the Vector.
对Vector方法的每一次调用——三个add调用和一个toString调用——都要求得到并释放Vector上的锁。
I have a vector which is in three-dimensional space.
假设有一矢量，在三维空间中。
An expression that is the sum of a real number and a vector and that contains four terms, one real and three imaginary.
四元数一实数和一矢量的和的表达式，有四个项，一个为实数项，另外三个为虚数项。
By means of a three vector equation system, the correlative equations of the undetermined parameters are thus deduced when the small disturbance theory is applied to multiple blade rows.
通过三个矢量方程组，系统地归纳了小扰动理论应用于多排叶片时各待定系数的关联方程。
The source code is presented next. Note that if the light is a directional light, the vector with the first three components is normalised to save time latter.
函数的源代码如下。注意如果光源是方向光，向量的前三个部分将被归一化，来节省时间。
QGIS handles all three - raster, vector, and database - a state of affairs that took considerable effort for programmers writing GIS data programming libraries.
QGIS处理所有三种数据栅格数据、矢量数据和数据库，这也是编写GIS数据编程库的程序员的重要努力方向。
The thesis introduces a three phase AC motor's mathematical model in static reference frame and a simulation system for AC motors to develop a vector control inverter system.
针对三相异步电机矢量控制系统的要求，根据在静止坐标系统中异步电机的数学模型，进行了系统仿真。
The difficulty of unsteady three dimensional vector field data visualization stems from both data representation and management of large volume data.
非定常三维向量场可视化的难点不仅在于数据表现本身，还在于大体积数据的管理和组织。
It provides three types of graphic objects: vector graphic shapes, images and text.
它提供了三种类型的图形对象：矢量图形、图像和文本。
An error correction method for three axial fluxgate sensor based on support vector regression (SVR) is proposed.
提出了一种基于支持向量回归机(SVR)的三轴磁通门传感器误差修正方法。
Magnetic gradient tensor is that the three components of the magnetic field vector space rate of change, is able to do well for the dipole localization and tracking.
磁力梯度张量表示的是磁场矢量三个分量的空间变化率，能够很好地用于偶极子场源的定位跟踪。
Since wind vector has two or three components, the radial velocity, as one component of wind vector, can not provide enough information for retrieving wind vector.
由于风矢量有二或三个分量，径向风速作为风矢量的一个分量，不能为反演风矢量提供足够的信息。
A three-dimensional path planning method based on vector data is presented.
提出了基于矢量数据的三维航迹规划方法。
The velocity vector and vortical contour in three different circumference positions were successfully acquired and the structure of the tip leakage vortex was clearly illustrated.
测量得到了三个不同周向位置下的涡量图和速度矢量图，并观测到了叶顶泄漏涡的涡旋结构。
The movement of rigid body is further discussed through vector analysis from the three dimensional Angle in this paper. Typical examples are also illustrated.
用向量分析的方法，从三维角度对刚体的运动进行了进一步讨论，通过典型实例作了更清楚的说明。
The essence of three component seismic reflection is three dimensional vector reflection field.
三分量反射地震的本质是三维矢量反射波场。
Two-and three-dimensional Euclidean Spaces are metric Spaces as are inner product Spaces vector Spaces and certain topological Spaces.
二维和三维的欧几里德空间是度量空间。另外，内乘空间、向量空间以及某些拓扑空间等也都是度量空间。
An experiment prototype of 1.5kw three-level inverter has been manufactured, which is driven by "based on FPGA vector generator". We finally got ideal wave in this experiment system.
本文最后搭建了一个基于多电平矢量发生的逆变实验系统，制作了一台用矢量发生器驱动的1.5KW的多电平变换器实验样机，在样机上得到了较为理想的波形。
This scheme utilize the current vector space Angle to judge the three stator current polarity, deduce the three stator voltage compensations.
该方案通过电流矢量空间角判断感应电机三相定子电流正负，推导出三相定子电压的补偿量。
And displays the structure endogenic force characteristic of these three kinds of different vector high ratio intuitively by the massive illustrations and forms.
并以大量的插图、表格直观地表现这三种不同矢高比时结构的内力特征。
An all-digital vector control system of three-phase induction motor is presented.
提出了一种全数字式的三相异步电机矢量控制系统。
The mathematical model of three-phase asynchronous motor in rotating coordinate system is established, and PWM technology of space vector is discussed.
建立了三相异步电动机在旋转坐标系下的数学模型，论述了空间矢量脉宽调制技术原理。
On the other hand, some admissible support vector kernels are proposed, including three coordinates-transform kernels, a wavelet kernel and a scaling kernel.
在核函数的构造方面，我们提出了几种可容许的支撑矢量核，包括三种坐标变换核、子波核和尺度核函数。
On the other hand, some admissible support vector kernels are proposed, including three coordinates-transform kernels, a wavelet kernel and a scaling kernel.
在核函数的构造方面，我们提出了几种可容许的支撑矢量核，包括三种坐标变换核、子波核和尺度核函数。
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