| 单词 | hammer-harden |
| 释义 | > as lemmashammer-harden hammer-harden v. transitive to harden (metals) by hammering. ΚΠ 1678 J. Moxon Mech. Exercises I. v. 92 The Iron Saws are only Hammer-hardned. 1846 W. Greener Sci. Gunnery (new ed.) 105 We recommend hammer-hardening in all mixtures containing iron. < as lemmas |
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