星形三角开关;星形三角形转换开关
Most of the presently-used telephone communication system is the central-switching one which adopts the star topological structure and whose user sets are connected to the switch through their respective telephone lines.
目前使用的电话通信系统主要是采用星型拓扑结构,其用户话机通过各自的电话线路与主机相连的有主机系统。
This paper has realized a set of stable performance, low cost, and can quickly switch between two ( GPS/ CNSS) of different satellite signal "double star navigation system" the design of receiver, has good application prospect.
本课题最终实现了一套性能稳定,成本低,并且能快速切换两种(GPS/CNSS)不同卫星信号的双星导航系统接收机的设计,具有很好的应用前景。
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