brightening effect
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结果表明此种新型染色增艳剂对酸性和直接染料具有很好的增深、增艳作用，对金属络合染料没有增艳作用，烘干后使用增艳效果消失。
The results showed that the dyeing brightening agent can brighten and deepen direct and acid dyes, but it has no effect on metal complex dyes and its brightening effect disappears after being baked.
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