三级网络 meaning in English

three-level network
three-stage network

This paper mainly introduces the technical character of process control automation system in dynamic metallurgy model and the advantage of process control system
介绍了济钢第三炼钢厂三级网络模式,着重阐述了计算机过程自动化系统在动态冶金模型炼钢中的技术实现特点及其优势。
The first and second layers consist of a independent sub - station to perform the acquisition and processing of the data of multi - parameters . many sub stations can be further connected together through a lan and constitute the third layer
多个这样的子系统互联可组成网络，配上服务器，组成第三级网络系统，实现大范围大量不同数据的采集、处理、控制和在子系统间的共享。
Shanxi is one of the poorer provinces in china , so the expense of a province wide meeting was quite a burden to their budget . due to these hardships the shanxi government decided to implement a video conferencing system to help reduce costs and loss of productivity caused by extended travel schedules . due to the importance of government matters , shanxi officials wanted a solution that was both extremely stable and secure
在省政府设省级会场一个和该会场的终端共同构成一级网络，在山西省的十二个地市设12个地市级会场，每个会场放置一台mcu和一个视频终端构成二级网络，在每个地市下属的县级会场放置一台视频终端共117个视频终端构成三级网络。