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城市网
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  city network
     This paper discusses in detail the theory, method and several problems for reducing GPS observation results to city network coordinate system, and gives a proper method for it
     本文详细研究了GPS观测值归算到城市网坐标系统的理论、方法和存在的问题,指出了一种适用的方法。
短句来源
     From the location of central cities and the construction of city centres,city boundaries,city groups and city network as well as their interrelations,the article expounds the construction of network system in the central city groups of Chongqing Study of this problem is favourable for big cities to bring along wide rural areas to realize strategies for development.
     从中心城市中心的定位,城市中心区,城市极、群、网的建设,以及城市中心区,城市极、城市群、城市网相互间的关系出发,从大至小依次是细分,而从小至大则依次是综合,细分与综合是互换位置、辩证统一的关系。
短句来源
  “城市网”译为未确定词的双语例句
     Metropolitan area network(MAN) is a new branch of the computer networks appearing in recent years. It is developed on the basis of the widely used wide area network(WAN)and local area network(LAN).
     城域网也称都市网或城市网,是近年来计算机网络领域出现的一个新的分支,是在已经得到广泛应用的广域网(WAN)和局域网(LAN)基础上发展起来的一种新型的计算机网络。
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  相似匹配句对
     Geographic information system of city heat-supply networks
     城市热力地理信息系统
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     E City
     e城市
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     City
     城市
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     THE MESH
    
短句来源
     Geographic Information System (GIS) for Municipal Sewage Network
     城市污水管地理信息系统设计
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  city network
The problem of determining the equilibrium distribution of the traffic flow in a city network is studied when the traffic demands on a set of given routes are known.
      
This is illustrated through using the world city network as an alternative spatial framework to the world political map.
      
Within the inter-city network, high-bandwidth connections will be managed using optical control plane technology, allowing traffic to be dynamically routed on demand and re-configured around any network event.
      
Another question is how to model hypercongestion on a realistic city network.
      
Business School, but an artist's impression in City Network 2002, is already teaching tomorrow's business leaders and international professionals.
      
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This paper discusses in detail the theory, method and several problems for reducing GPS observation results to city network coordinate system, and gives a proper method for it

本文详细研究了GPS观测值归算到城市网坐标系统的理论、方法和存在的问题,指出了一种适用的方法。

Metropolitan area network(MAN) is a new branch of the computer networks appearing in recent years. It is developed on the basis of the widely used wide area network(WAN)and local area network(LAN). At present, researches concerning the DQDB protocal and its related products have been widely carried out in our country. Packet processing access unit(PPAU)serves as the MAC aggregation function of the DQDB protocal. The main function of PPAU is to process the inconsecutive, asynchronous data on the DQDB network....

Metropolitan area network(MAN) is a new branch of the computer networks appearing in recent years. It is developed on the basis of the widely used wide area network(WAN)and local area network(LAN). At present, researches concerning the DQDB protocal and its related products have been widely carried out in our country. Packet processing access unit(PPAU)serves as the MAC aggregation function of the DQDB protocal. The main function of PPAU is to process the inconsecutive, asynchronous data on the DQDB network. The article designs and implements the PPAU software in a DQDB network, and discusses in detail the functions and operation environment of PPAU, the interface between the PPAU and the bus driver cards, the PPAU′s processing of the upper layer′s service data, and other implementation problems with their solutions.

城域网也称都市网或城市网,是近年来计算机网络领域出现的一个新的分支,是在已经得到广泛应用的广域网(WAN)和局域网(LAN)基础上发展起来的一种新型的计算机网络。目前国内正在开展对DQDB的研究和相关的产品开发。分组处理访问单元PPAU属于DQDB协议MAC汇聚功能,主要处理DQDB网上非连续性的异步数据。本文设计实现了DQDB网分组处理访问单元PPAU软件。文中着重讨论了PPAU的功能与运行环境,PPAU与总线驱动卡的接口,PPAU对上层服务数据的处理,以及PPAU软件实现中遇到的其他问题及其解决方法。

The GPS network can be transformed into the primary urban control network by a regional auxiliary ellipsoid.The normal uncertainty transformation of malti point coincidence methed,is avoided.And the earth coordinate in an auxiliary ellipsoid is used as a transformation instead of the national earth coordinate.The precision of GPS net is agreed with the urban control network.

借助于一个区域性辅助椭球将GPS网的三维坐标,转换到原有的城市控制网坐标系中.避免了通常采用的具有不确定性的多点重合的转换方法,并且不再以国家大地坐标系的参考椭球上的大地坐标作为过渡,而是以一个辅助椭球上的大地坐标作为过渡.使得GPS测点的精度与城市网的精度相一致

 
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