搜尋結果
stratum
- IPA[ˈstrɑːtəm]
英式
- a layer or a series of layers of rock in the ground;a thin layer within any structure
noun: stratum, plural noun: strata
- 釋義
名詞
- 1. a layer or a series of layers of rock in the ground a stratum of flint 同義詞
- ▪ a thin layer within any structure thin strata of air
- 2. a level or class to which people are assigned according to their social status, education, or income members of other social strata 同義詞
- ▪ a group into which members of a population are divided in stratified sampling allocation of sample units to strata