目前使用的屏蔽数据通信电缆通常为单层或双层铜丝编织结构，生产效率低，成本高。
At present, the shielded category cables use single or double copper braid as shield, which features low productivity and high costs.
数据通信技术中的一种网络拓扑结构，其中各个工作站通过t型接头与主电缆相连。
In data communications, a network topology in which workstations are connected by t junctions to one main cable.
数据通信技术中的一种网络拓扑结构，其中各个工作站通过t型接头与主电缆相连。
In data communications, a network topology in which workstations are connected by t junctions to one main cable.
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