通信网络可以按照其物理排列或拓扑结构来分类。有三种常见的拓扑结构：星型、总线型和环型。
Communication networks can be classified in terms of their physical arrangement or topologies. Three common topologies are the star, bus, and ring.
运用MAC协议一种类型便是以太网，它被用于总线或星型拓扑结构。
One type of MAC is Ethernet, which is used by bus or star network topologies.
PACS服务器采用星型拓扑结构与各设备连接，图像浏览终端通过交换机采用总线结构与PACS服务器连接。
Image display workstations have been connected to the PACS server by a bus topology through switch equipments.
有三种常见的拓扑结构：星型、总线型和环型。
在同一个网络中用于分配计算机的通用的拓扑结构有点对点，总线结构，星型结构和环形结构。
Common topologies used to arrange computers in a network are point-to point, bus, star, and ring.
在同一个网络中用于分配计算机的通用的拓扑结构有点对点，总线结构，星型结构和环形结构。
Common topologies used to arrange computers in a network are point-to point, bus, star, and ring.
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