New: Verb conjugations - all tenses, all adjective , plural forms; accusative, dative and genitive, optimized search with word stem.
Notices
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the layer of hardened metal at the surface of a case-hardened part (distinct from the core or body, which is the softer metal it covers or surrounds). When something is case hardened, heat is applied to toughen the metal. The tough layer so formed is the 'housing'