单词 | blister |
释义 | blister [`blis·tǝr] ENGINEERING A raised area on the surface of a metallic or plastic object caused by the pressure of gases developed while the surface was in a partly molten state, or by diffusion of high-pressure gases from an inner surface. GEOLOGY A domelike protuberance caused by the buckling of the cooling crust of a molten lava before the flowing mass has stopped. GRAPHIC ARTS A damaged area on a photographic material where the emulsion has separated from the base. MATERIALS A roughly circular or elliptic unbonded area between plies of a laminated material; usually caused by trapped moisture. Also known as steam blow. MEDICINE A local swelling of the skin resulting from the accumulation of serous fluid between the epidermis and true skin. MINING ENGINEERING A protrusion, more or less circular in plan, extending downward into a coal seam. NUCLEONICS A protuberance that sometimes develops on the surface of a nuclear-reactor fuel element during use, generally because of entrapped gases. |
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