| 单词 | subbase |
| 释义 | subbase —subbasal, adj. /sub"bays'/, n. 1. Archit. the lowest part of a base, as of a column, that consists of two or more horizontal members. 2. Math. 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. Cf. base1 (def. 13b). [1820-30; SUB- + BASE1] |
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