[医]胶片变黑,胶片变暗,胶片黑化;
This paper discussed the mechanism of forming black film of the blackening system at room temperature on steels in the mixture solution of copper salt and selenious acid, and the influence factors for blackening film.
讨论了铜盐-亚硒酸钢铁常温发黑体系的发黑成膜机理和发黑膜性能影响因素。
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