单词 | electron radiography |
释义 | electron radiography [i¦lek´trän ´rād·ē`ä·grǝ·fē] GRAPHIC ARTS A technique for producing a photographic image of an opaque specimen by transmitting electrons through it onto an adjacent photographic film; the electrons are generated in a metal sheet adjacent to the specimen or in the specimen itself by x- rays. |
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