substratum 英式发音[sʌb'strɑːtəm; -'streɪtəm]美式发音['sʌbstretəm]
substratum基本解释
n,基础；根据；下层,同近
substratum相关例句和用法
a substratum of rock.底层岩石
substratum英英释义
底土, 下层土壤地基英释中释na layer that lies beneath another layer, especially in the earth
n,基础；根据；下层,同近
a substratum of rock.底层岩石
底土, 下层土壤地基英释中释na layer that lies beneath another layer, especially in the earth
