| 单词 | emery |
| 释义 | Word Frequency emery(ˈɛmərɪ) noun a. a hard greyish-black mineral consisting of corundum with either magnetite or haematite: used as an abrasive and polishing agent, esp as a coating on paper, cloth, etc. Formula: Al2O3 b. (as modifier) emery paper Word origin C15: from Old French esmeril, ultimately from Greek smuris powder for rubbing |
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