中继网是电话局之间采用的传输网，是电信网在以电话业务为主的阶段使用的术语。分市内中继网（市话）和长途中继网。 中继网可通过光纤、微波和卫星等传输方式为不同服务方位的业务网之间传送信号，它是电信网中的传输网的另一代称。
... junction loss 汇接损耗 junction network 中继网 junction transposition 汇接转置 ...
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但在Grex的系统内，水下机器人将充当一个中继站，将来自母船的控制信号传给连网的其他机器人，这种方式下的传输距离可达到数英里。
But in the Grex system, vehicles will be able to act as relay stations, bouncing a control signal from the mother ship to the networked submarines over many miles.
对开关信号进行直接编码，采用3个连续出现的大码距字节表示开关信号的一个状态，编码后的信号利用电信网的数字中继线路传输。
The switch signal was encoded directly and one state was expressed with 3 long distance sequence code, then it was transmitted through the digital relay line of telecommunication network.
家庭网关和中继器之间通过以太网实现家庭内部网络的互联并通过家庭网关与外界进行信息的交互。
Home gateway and relay connect through Internet in order to form internal home communication network. And this system interact information with outside through home gateway.
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