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| 单词 | mystery gold |
| 释义 | > as lemmasmystery gold ΘΚΠ society > occupation and work > materials > derived or manufactured material > metal > alloy > [noun] > copper, tin, and platinum or imitation gold mystery1885 1885 Standard 8 Apr. 6/4 There was not a particle of gold in it. It was made of a composition called ‘mystery’, composed of platinum, tin, and copper. 1887 J. Hutchison Pract. Banking III. 681 (note) A great number of spurious sovereigns and half-sovereigns are in circulation... Those made of ‘mystery gold’..stand the tests of the ordinary acids. < as lemmas |
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