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cs网
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  cs-network
     (2) A T_3 topological space X is the strong sequence-covering msss-image of a matric space if and only if it has a σ-locally countable cs-network.
     (2) T3空间X具有σ-局部可数CS-网当且仅当X是某一度量空间的强序列复盖msss-映象.
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     THE MESH
    
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     SPACES WITH A σ- POINT FINITE CS*- NETWORK
     关于σ-点有限CS-
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     IN CS-2 Technology and Its Development
     智能CS-2技术及发展
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     搜
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     tubercularis, Empoascs (s.str.)
     cs(s.str.)
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  cs-network
Suppose X is a g-first countable space with a -locally countable cs-network.
      
Suppose X is a g-first countable space with -locally countable cs-network.
      
To show that Y has no point-countable cs-networks, suppose that Y has a point-countable cs-network.
      
Then X has a point-countable cs-network if and only if it has a point-countable weak base.
      


In view of the deficiency of communication resource in our country, the starting situation of computer communication network and the outlook of integrated information network, a hybrid-switched (HS) communication architecture with dynamic layer structure is proposed in this paper.The nucleus of HS structure is a public circuit-switched (CS) network. The second layer of HS structure, in which CS network is turned into packet-switched (PS) network, consists of the communication processors (CP). User's computers/terminals...

In view of the deficiency of communication resource in our country, the starting situation of computer communication network and the outlook of integrated information network, a hybrid-switched (HS) communication architecture with dynamic layer structure is proposed in this paper.The nucleus of HS structure is a public circuit-switched (CS) network. The second layer of HS structure, in which CS network is turned into packet-switched (PS) network, consists of the communication processors (CP). User's computers/terminals (C/T) of the third layer may use either PS or CS circuits depending on demand of the user.The functions of the CP layer are intended to reduce calls for CS network by means of concentrator, to control dynamic change of circuit set on the basis of minimum circuit set and to multiplex each physical circuit by the application of PS technique.This paper also gives description of the hardware and software features of a CP. The communications software module includes functions of the dataset, conversion functions of distinct link control procedures, circuit reservation, transmision control and routing control of PS network.

本文针对我国通信资源贫乏、计算机通信网刚刚起步的现状,就综合信息网络的发展前景,提出了一种分层动态结构的混合交换体系。这种混合交换结构的内核是公用电路交换(CS)网。CS网由通信处理机(CP)组成的第二层改造为分组交换(PS)网。根据用户需要,第三层的用户计算机/终端(C/T)可以使用PS或CS线路。CP层的功能包括:用集中器功能减少对CS网的呼叫,在最小电路集合基础上控制电路集合的动态增减,采用分组交换方式复用每一条物理电路等。文章最后介绍了一台CP的硬件和软件特性。通信软件包括数传机功能、通信规程转换、电路预约、PS网传输控制和路径控制等模块。

It is shown that spaces with a a -point finite CS* -network can be characterized by the images of metrizable spaces under certain mappings.

证明了具有σ-点有限cs-网的空间,可以刻划为度量空间在某确定映射下的像.

In this paper it is shown that a regular space has a locally countable k-network if and only ifit has a locally countable cs-network. As its application,a Perfect preimage theorem on spaces with a locallycountable k-network is established.

证明了一个正则空间有局部可数K网当且仅当它有局部可数CS网,作为其应用,本文建立了具有局部可数K网空间的完备逆映象定理。

 
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