| 单词 | corundum point |
| 释义 | > as lemmascorundum point 3. attributive, as in corundum point, corundum stick, corundum tool, corundum wheel, used in polishing, dressing millstones, etc. ΚΠ 1792 Oakley in Philos. Trans. (Royal Soc.) 88 407 Among these broken lumps, the Corundum stone is found. 1873 J. Richards On Arrangem. Wood-working Factories 106 Corundum or emery wheels are now generally used for dressing both saws and cutters. 1884 F. J. Britten Watch & Clockmakers' Handbk. (new ed.) 86 The edges of holes in dials may be trimmed with corundum sticks. < as lemmas |
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