单词 | tin-witts |
释义 | > as lemmastin-witts tin-witts n. see quots. ΘΚΠ society > occupation and work > materials > raw material > mineral material > ore > [noun] > tin ore > types of black tin1602 tin-witts1853 witts1853 1853 A. Ure Dict. Arts (ed. 4) II. 858 ‘Tin witts’: the ore obtained from the stamp floors. 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 186 Tin-witts, Corn[wall], the product of the first dressing of tin-ores, containing, besides tinstone, other heavy minerals (wolfram and metallic sulphides). < as lemmas |
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