单词 | case hardening |
释义 | case hardening [`kās ´härd·ǝn·iŋ] GEOLOGY Formation of a mineral coating on the surface of porous rock by evaporation of a mineral-bearing solution. MATERIALS A condition of stress and set in dry lumber characterized by compressive stress in the outer layers and tensile stress in the center or core. METALLURGY Process of carburizing low-carbon steel or other ferrous alloy for making the outer layer (case) harder than the core. |
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