| 单词 | Permo-Carboniferous |
| 释义 | Permo-Carboniferous [¦pǝr·mō´kär·bǝ`nif·ǝ·rǝs] GEOLOGY 1. The Permian and Carboniferous periods considered as one unit. 2. The Permian and Pennsylvanian periods considered as a single unit. 3. The rock unit, or the period of geologic time, transitional between the Upper Pennsylvanian and the Lower Permian periods. |
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