subbase

/suhb-beys/US // ˈsʌbˌbeɪs //UK // (ˈsʌbˌbeɪs) //

底层基础,基地,底层基地,基层

Definitions

n.名词 noun

1
- : Architecture. the lowest part of a base, as of a column, that consists of two or more horizontal members.
- : Mathematics. a collection of subsets of a topological space having the property that every open set of a given topology can be written as the union of intersections of finite numbers of sets in the collection.Compare base.