本系统采用分布式计算机控制系统，由一台PC机和多台单片机构成主从式总线型结构。
This system USES the distributed computer control system and is made of a PC and several SCMs, which show a principal and subordinate structure with bus style.
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.
系统采用总线型的拓扑结构和分布式的框架结构。
The system adopts topology structure of bus type and distributed frame.
总线型的网络拓扑结构、令牌传递总线方式的运用，确保了系统数据采集网络通信顺畅。
The bus network topology structure and token accessing control are used to solve the capability problem of the network communication in data collection.
有三种常见的拓扑结构：星型、总线型和环型。
星形结构在运行维护、传输时间等多方面优于总线型、环形结构，宜采用双星形结构构建过程层网络。
As star structure is superior over bus and ring structures in operational maintenance, transmission time and so on, dual-star structure is proposed for process level networking.
星形结构在运行维护、传输时间等多方面优于总线型、环形结构，宜采用双星形结构构建过程层网络。
As star structure is superior over bus and ring structures in operational maintenance, transmission time and so on, dual-star structure is proposed for process level networking.
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