本文介绍了近年来国内外对于偶氮染料光致褪色的研究进展，综述了偶氮染料光褪色与偶氮键断裂机理。
Recent research progresses on photofading of azo dyes at home and abroad was introduced, and the photofading mechanisms at azo bond were reviewed.
本文介绍了近年来国内外对于偶氮染料光致褪色的研究进展，综述了偶氮染料光褪色与偶氮键断裂机理。
The main study methods and present research conclusions of photofading of organic dyes were reviewed in this paper.
耐久墨：不会褪色的油墨。亦称耐光油墨。
Permanent inks: Inks which do not fade. Also called Lightfast inks.
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