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The color fastnesses of these dyes were 4-5, and three of these dyes had high lightfastness of 6-7.
所有染料的色牢度均在4 ~ 5之间,有三个品种的耐光牢度达到了6 ~ 7级。
youdao
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The color fastnesses of these dyes were 4-5, and three of these dyes had high lightfastness of 6-7.
所有染料的色牢度均在4 ~ 5之间,有三个品种的耐光牢度达到了6 ~ 7级。
youdao