单词 | rag-burning |
释义 | > as lemmasrag-burning rag-burning n. rare the first or partial roasting of tin ore. ΚΠ 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 186 Tin-witts, Corn[wall], the product of the first dressing of tin-ores... Its first or partial roasting is called rag-burning. < as lemmas |
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