矢量

This article detailedly expatiated upon the principles, contents and methods of cropland classification; it analyzed the necessity to combine the work of cropland classification with GIS technology, summarized the attributions of ARC/INFOand some other related softwares; it established the technologic route of cropland classification supported by GIS, by a case study in Liwu Town,Li County Hebei Province, this article expatiated the practicable mechanism of combining the function of ARC/INFO with the work of cropland classification, and put forward some new ideas and approaches of utilizing GIS: this paper put forward the idea of coding the polygons in the basic graphic database such as soil map and land use map according to their attributes, and put forward the detailed coding project; based on the code databases, it expatiated upon the detailed approaches to create single梖actor map and output the final classification map; it put forward the principles and the method of creating classification units in the environment of GIS, that is how to keep the lines of soil polygon, the border of districts and the important objects such as residential areas, banks of rivers and roads ,and how to overlap single梖actor soil map and land use map, and to delete some vector lines of the overlapped map appropriately; it detailed the methods of creating mathematic model of classification coefficients in the environment of computer, and used FOXPRO6.0 programs to realize the automation of calculating coefficients; it represented the method of plotting the final map by overlapping various coverages according to the code tables and lookup tables, the process of outputting the cropland classifying map was finished by program.

本文法对耕地等别划分的原则、内容及方法作了较详细的阐述，介绍了多系数综合修正法的耕地等别计算方法及其具体应用和AHP的确权方法；分析了耕地等别划分工作与地理信息系统技术相结合的必要性，简要介绍了地理信息系统软件ARC／INFO及其他相关软件的功能特点，制定了地理信息系统支持下耕地等别划分的技术路线，通过对河北省蠡县蠡吾镇的实证研究，重点阐述了ARC／INFO及相关数据库软件与耕地等别划分结合的有效机制及GIS应用的一些新思想、新方法：提山了对土壤图和土地利用现状图等基础图形数据库进行特征编码的思想和具体的编码方案，阐述了基于与图形库相链接的特征编码表，单因素图提取、成果图的输出的具体实现方法；提出了GIS环境下耕地单元划分的原则和方法，即在保留土壤因素图斑界线、行政界线和重要地物等的原则下，将土壤单因素图和土地利用现状图进行拓扑叠加，对叠加图中的矢量线进行适当的删除；阐述了在计算机环境下，耕地分等参数计算模型建立的方法，并用FOXPRO6.0语言程序实现了参数计算的自动化；阐述了根据图形库特征编码表和建立绘图符号查找表，按不同图层叠加绘制成果图的方法，该过程用命令程序实现耕地等别图的输出。

A clockwise rotation causes the critical mode to occur in the area of 550 rpm and the propulsion force against the direction of gravitation vector is created.

顺时针方向旋转的关键原因模式将发生在该地区的550转速和推进武力的方向引力矢量创建。

This is the closed loop of vector control system using speed sensor.

这是一个有速度传感器的闭环矢量控制系统，观测转子的磁通，提出了磁通观测器和电机解耦控制的结构，建立数学模型，并且用计算机仿真实验证实该控制系统动态特性良好，并对定转子电阻变化具有鲁棒性。

Digital signal processor; space-voltage vector pulse width modulation; pressure closed-loop control system

数字信号处理器；电压空间矢量脉宽调制；压力闭环控制系统

Some problems such as start-up of the motor, vector control, SPWM output, fault protection closedown, system communication, were discussed in this paper.

论文具体讨论了电机启动、矢量控制、正弦脉宽调制波的输出、故障保护停机及系统通信的软件实现方法。

Two methods to draw productive technical plane figures of cutting areas are developed in the paper:one is vector, by which surveying data are put into system and processed to calculate the area and closing error, and finally graphical file is established in vector format.

由外业测量数据的输入，经系统处理得出面积、闭合差，并最终形成矢量图形文件；其二为栅格法。

It is an idea from statistical physics to describe continuous physical field coarsely.

态矢量的概念来源于统计物理学，是对连续的物理场进行粗粒化描述的方法。

So, how to achieve global optimal codebook become the one of key problems of designing VQ algorithm.

因此，如何获得全局最优的码书成为矢量量化算法设计的主要研究问题之一。

This paper proposes an efficient codebook design algorithm for image compression.

提出了一种高效的矢量量化码將设计算法。

In chapter two, the basic principles of vector quantization and LBG codebook design algorithm are introduced.

本论文系统地对神经网络及其在图象矢量量化压缩编码的应用进行了研究。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。