助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   digital 在 自然地理学和测绘学 分类中 的翻译结果: 查询用时:0.147秒
图标索引 在分类学科中查询
所有学科
自然地理学和测绘学
图书情报与数字图书馆
仪器仪表工业
工业通用技术及设备
外科学
无线电电子学
计算机软件及计算机应用
自动化技术
电力工业
更多类别查询

图标索引 历史查询
 

digital
相关语句
  数字
    Digital Employment--The Study of the Informationization of Regional Labor Market Based Geographic Information System
    数字就业——基于GIS的区域劳动力市场信息化研究
短句来源
    Research on Terrain Data Acquisition & Digital Terrain Analysis in Digital Terrain Modeling
    数字地形模拟—地形数据获取与数字地形分析研究
短句来源
    Research on the Construction and Application of Spatial Data Infrastructure of Digital City
    数字城市空间数据基础设施的建设与应用研究
短句来源
    The Research and Practice on Key Techniques of Digital Basins Construction Based on GIS and RS
    基于GIS和RS的数字流域构建关键技术研究与实践
短句来源
    The Theory & Practice of "Digital City"
    “数字城市”的理论与实践
短句来源
更多       
  数码
    THEORY AND METHOD OF ALL DIGITAL PHOTOGRAMMETRY OF GENERAL DIGITAL CAMERA
    基于普通数码相机全数字摄影测量的理论与方法
短句来源
    Study of Mathematic and Physical Model of All Digital Photogrammetry on Gerneral Digital Camera
    普通数码相机数字摄影测量的数理模型研究
短句来源
    Spatial Data Model and Visualization for Digital City
    数码城市空间数据模型与可视化研究
短句来源
    Total Station Digital Coding Drawing
    全站仪数码制图
短句来源
    The Method of Obtainning 3-Dimension Information of the Objects Based on Stereo Pair of Digital Camera
    基于数码相机立体像对的物体3维信息快速获取方法
短句来源
更多       
  “digital”译为未确定词的双语例句
    Design and Implement of Navigation Digital Map Based on Mobile Terminal in LBS
    LBS移动终端导航电子地图设计与实现
短句来源
    DYNAMIC ADJUSTMENT OF WORKNET USING THE METHOD OF DIGITAL APPROXIMATION
    数值逼近法动态平差
短句来源
    IRSA-2 Digital Image Analysis and Processing System
    IRSA-2遥感图象分析处理系统
短句来源
    The application of digital filter with varyinglength to earth tide hamonic analysis
    任意长度的数字滤波器在固体潮调和分析中的应用
短句来源
    Formation of Digital Terrain Model (DTM) and Its Application in Agricultural Planning
    数字地面模型(DTM)的建立及在农业规划中的应用
短句来源
更多       
查询“digital”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  digital
Such systems play an important role in time-frequency analysis and digital signal processing.
      
There are many advantages in the use of Hadamard matrices in digital signal
      
An Inhomogeneous Uncertainty Principle for Digital Low-Pass Filters
      
This article introduces an inhomogeneous uncertainty principle for digital lowpass filters.
      
The measure for uncertainty is a product of two factors evaluating the frequency selectivity in comparison with the ideal filter and the effective length of the filter in the digital domain, respectively.
      
更多          


Abstract JGD system, a highly accurate position fixing system consists of one master transmitting station, up to five secondary transmitting stations and unlimited mobil receiving stations. It can provide an accuracy of several meters up to above ten meters within a range of 150 kilometers. To reach a compatibility of survey and navigation services, the system uses one medium-high frequence wave for high accuracy and two medium-low frequencies waves for stability of day-and-night operation as well as for lane...

Abstract JGD system, a highly accurate position fixing system consists of one master transmitting station, up to five secondary transmitting stations and unlimited mobil receiving stations. It can provide an accuracy of several meters up to above ten meters within a range of 150 kilometers. To reach a compatibility of survey and navigation services, the system uses one medium-high frequence wave for high accuracy and two medium-low frequencies waves for stability of day-and-night operation as well as for lane identification or ambiguity resolution of the fine pattern by two super imposed coarse patterns. Among the systems of the same sort at home and abroad, JGD system was the first to adopt the new techniques of wide band limiting stages with operational amplifiers as their cores, digital phase locking, automatic lane identification circuits for error analysis and determination, and wide band linear power combination. During the first sea test around Lian Yun Harbour shew that the system was easy to operate, stable when working, accurate in loop closing and effective in lane identification. The system also successfully fulfilled the three tasks of precise position fixing in open sea survey which the Lian Yun Port Authorities were unable to do before. This was favourably commented by those concerned. On the technical meeting of appraising the JGD system managed by the Bureau of Science & Technology of the Ministry of Communications, all the attendants believed that the JGD system was a rather gratifying scientific research achievement, which has improved high accuracy position fixing technique in China.

JGD是由一主台,五副台和任意多个移动接收机所组成的能够在150公里的范围内提供几~十几米定位精度的高精度无线电定位系统.为了满足测量,导航兼容,本系统采用一中短波满足高精度需要,采用二中长波满足昼夜使用稳定性需要,同时完成对精格网的二级多值性消除.与国内外同类型系统比较,JGD首先采用了以线性组件为核心的宽带限幅放大级,数字锁相,具有误差分析与判断能力的自动巷识别电路和宽带线性功率合成等新技术.在连云港的首次海上试验中,证实了本系统操作简便,工作稳定,闭合良好,巷识别功能有效.同时还顺利地解决了连云港建港中过去所无法进行的三项外海测量作业的精密定位任务,受到了有关方面的先赞许与好评.在由交通部科技局主持的关于JGD科研评议会上,与会代表一致认为JGD系统是一项十分可喜的科研成果,把我国的高精度定位技术提高了一步,并通过了科研评议.

This paper describes the two-channel observations with experimental VLBI system. For comparison, we used both independent and common local oscillators driven by hydrogen masers. A digital correlator was used for real-time cross correlation. Delay measurements were made by means of two-channel bandwidth synthesis and the baseline was determined to a precision of a few decimeters.

本文给出:利用实验VLBI系统进行的双通道观测。为了比较,我们分别用公共本振和独立本振进行了观测。实验采用了两台氢钟并用数字乘法器作实时互相关计算,通过双通道带宽综合来测量时间延迟,获得了几十厘米精度的基线测量值。

The design of software of surface symbol has promoted the development of thematic auto-cartography. The software is possessed of the character of serial structure in using these programs. It is composed of subprogram of surface symbol, of computing sign coordinate and of plotting out independent sign. By using the software we can design different signs of quite a lot of different thematic maps, and can automatically plot them out.The realizing process of surface symbol subprogram includes transformation of coordinate...

The design of software of surface symbol has promoted the development of thematic auto-cartography. The software is possessed of the character of serial structure in using these programs. It is composed of subprogram of surface symbol, of computing sign coordinate and of plotting out independent sign. By using the software we can design different signs of quite a lot of different thematic maps, and can automatically plot them out.The realizing process of surface symbol subprogram includes transformation of coordinate of polygon, interpolation computing of terminal point, arrangement of coordinate terminal point and recovery of system of initial coordinate, etc.To achieve the process of subprogram of computing sign seat coordinates, it is necessary to define the orientation of the drawing pen in going forward, to compute how many signs in a row and to define coordinate of every sign under the left side, etc.The besal designing mind of subprogram of independent sign is that it has arranged a data district that will store digital information of initial address of sign of every kind. Increment of coordinate is computed in the program,and coordinate value of drawing pen in advance is computed in the program too. The purpose is to plot out sign of different figures. By using different data it is possible to plot out sign which can reflect quality diversity of geographical regions or feature of numerical value.In a word, the study of software provides certain technical and scientific methods for thematic auto-cartography of agricultural map and population map, etc.

本文叙述了面状符号系统软件的结构特点,阐明了面状符号软件设计的逻辑思路和算法原理,指出了符号软件在专题自动制图中应用的广阔前景。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关digital的内容
在知识搜索中查有关digital的内容
在数字搜索中查有关digital的内容
在概念知识元中查有关digital的内容
在学术趋势中查有关digital的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社