单词 | assay-ton |
释义 | > as lemmasassay-ton assay-ton n. (see quot.). ΚΠ 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 103 Assay-ton, a weight of 29.166⅔ grams..Each milligram of gold or silver obtained from one assay-ton of ore represents one ounce troy to the ton of 2000 pounds avoirdupois. < as lemmas |
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