| 单词 | trough core |
| 释义 | > as lemmastrough core trough core n. Geology see quot. ΘΚΠ the world > the earth > structure of the earth > structural features > sedimentary formation > [noun] > stratum > position or direction of strata > innermost strata trough core1911 1911 Encycl. Brit. X. 598 The innermost strata in a fold constitute the ‘core’, arch-core, or trough core. < as lemmas |
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