Mining and Geology. A vein; a line or layer of ore within a vein; a stratum or dyke of stone or rock.
| 单词 | θ6356 |
| 释义 | the world > the earth > minerals > mineral deposits > [noun] > vein > solid part (1) riba1500 Mining and Geology. A vein; a line or layer of ore within a vein; a stratum or dyke of stone or rock. |
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