| 单词 | diamond-powder |
| 释义 | > as lemmasdiamond-powder diamond-powder n. the powder produced by grinding or crushing diamonds. ΚΠ 1753 Chambers's Cycl. Suppl. Diamond Powder is of great use for grinding hard substances. 1802 T. Thomson Syst. Chem. I. 47 Diamond powder can only be obtained by grinding one diamond against another. < as lemmas |
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