substation
noun uk/ˌsʌbˈsteɪ.ʃən/ us/ˌsʌbˈsteɪ.ʃən/
(ELECTRICITY)
electricity substation 变电站，变电所，配电室
a place that allows electricity to go from one part of the electricity production system to another
(PART OF ORGANIZATION)
[ C ] US（某一组织机构的）分部，分站
a division of an organization that works under the general control of a larger office
a police substation 派出所