备用站 meaning in English

subordinate station

When the main weather stations or anemometers in those areas are under maintenance , the webpage will display data from the backup stations or anemometers
天文台在某些地区设有备用气象站和风速表。当主站进行维修时，网页会显示备用站的数据。
The automation is composed of two operating station computers ( one is a backup computer ) and three slave computers . every slave computer , which is cored by omron c200 plc , controls a generator independently . slave computers have data detection and control function with the help of the data detection and control interfaces which are composed of all kinds of position swiches , sensors and execution units
本自动化系统由两个主站(其中一个是备用站)和三个子站组成，每个子站由一台omronc200hplc构成，独立控制一台发电机。