| 单词 | face-harden |
| 释义 | > as lemmasface-harden face-harden v. Metallurgy (transitive) = surface-harden vb. at surface n. Compounds 3. ΚΠ 1894 Times 30 June 9/6 All three [armour] plates had been face-hardened by the Harvey process. 1896 Westm. Gaz. 28 Feb. 6/3 All thick armour is face-hardened on the Harvey principle. 1983 U.S. Patent 5,853,655 7 The wheel washer perimeter, which will be in contact with the workpiece, may be face hardened. < as lemmas |
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