单词	case-hardening
释义	case-harden verb case-hard·​en ˈkās-ˌhär-dᵊn  case-hardened; case-hardening; case-hardens transitive verb 1 : to harden (a ferrous alloy) so that the surface layer is harder than the interior 2 : to make callous or insensible case-hardened adjective Word History First Known Use 1677, in the meaning defined at sense 1 case-hardening verb present participle of case-harden as in tempering Synonyms & Similar Words Relevance tempering annealing rigidifying stiffening gelatinizing crystallizing thickening jellying petrifying coagulating calcifying hardening encrusting ossifying gelating clotting crystalizing callusing gelling caking incrusting jelling freezing solidifying concreting indurating congealing setting firming (up) Antonyms & Near Antonyms softening liquefying melting smelting liquifying fluxing dissolving thawing fusing deliquescing unfreezing See More
随便看	ubiquinones ubiquist ubiquitarian ubiquitarians ubiquities Ubiquitism ubiquitous ubiquitously ubiquitousness ubiquitousnesses ubiquity ubuntus ubussu ubussu palm ubykhs UC Uca ucae ucas Ucayali Uccello Uccle uces Uchatius bronze uchatius metal

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