= platinum, n.
| 单词 | θ216457 |
| 释义 | society > occupation and work > materials > derived or manufactured material > metal > precious metal > [noun] > platinum (4) platina1752 = platinum, n. white gold1763 Platinum. Obsolete. platinum1794 A metallic silvery-white chemical element, atomic number 78, which is hard and relatively inert with a very high melting point, and is used… Subcategories:— form of (1) |
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