| 释义 |
case-harden, v.|ˈkeɪsˌhɑːd(ə)n|
[f. case n.2 (in locative constr.) + harden v.]
trans.
1. To harden on the surface; spec. to convert iron superficially into steel by partial cementation.
1677Moxon Mech. Exerc. (1703) 56 Rasps have formerly been made of Iron and Case-hardned, because it makes the outside of them hard. 1864Daily Tel. 11 Aug., Till the ship-men find some way of case-hardening their plates. 1881Greener Gun. 253 Some work is case-hardened by plunging when at a red heat into a solution of prussiate of potass.
2. fig. To harden in constitution or spirit, so as to render insensible to external impressions.
1713Steele Guardian No. 95 §15 Adieu, old fellow..e'en get thyself case-harden'd. 1771Smollett Humph. Cl. III. 26 Oct., In order to case-harden the constitution. 1871R. H. Hutton Ess. (1877) I. 100 He can so easily case-harden his spirit against the supernatural pain. |