| 单词 | air-harden |
| 释义 | > as lemmasair-harden air-harden v. chiefly Metallurgy (a) transitive to harden (esp. steel) by allowing it to cool or stand in air; (b) intransitive to harden through exposure to air. ΚΠ 1930 Engineering 23 May 680/3 Steel A was air-hardened from 950 deg. C after soaking for 20 minutes. 1973 Ada (Okla.) Sunday News 28 Jan. 10/1 (advt.) Modelling compound with reusable plastic lids. Pliable but will air harden for permanent objects. 2006 D. A. Stephenson & J. S. Agapiou Metal Cutting (ed. 2) 603 High-carbon steels tend to air harden, so that surface integrity problems such as residual stress and white layer formation are a particular concern. < as lemmas |
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