The extended equations of two-port network are given on the basis of the four-terminal characteristic. The effective conditions of two-port network connection are presented.
以四端网络的端口特性为依据，提出了双口网络的补充方程。应用该方程得出了双口网络联接的有效性条件。
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In computing and communications, data processing combined with telecommunications, e. g., the use of a telephone network to connect a remote terminal to a computer or to interconnect two computers.
The video server is an important part of the system, which has twonetwork CARDS to response the connections form the client and the terminal respectively.