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单词 rag-burning
释义

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rag-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.
extracted from rag-burnv.
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更新时间:2025/1/11 19:33:53