lightfastness

When PLA fabrics of 1/ 1 Standard depth were dyed with 12 azo dyes and 13 anthraquinone dyes, their fading mechanism was the same as that of polyester and acetate fibers, but fading was considerably faster and lightfastness was 1-2 levels lower.

用12只偶氮染料和13只蒽醌染料染成1/1标准浓度的PLA织物.其光褪色机理和影响因素与聚酯纤维和醋酸纤维相同，但褪色速度较快，耐晒牢度要差1-2级；

Each minister whose department was ordered to be thus pruned, fought hard to shift the cuts to someone else's department. Fadeometer: An instrument used for determing the lightfastness of inks and other material under predetermined controlled conditions.

凡是需要减少预算的部门，其大臣必然会拼命反对，以图把减少的部分转嫁给其他部门。褪色计：用来计算油墨或其他物料在预定的控制环境下的耐光度的仪器。

The washfastness grades of dyed wool, silk and nylon fabrics were all higher than 3, while their lightfastness properties were not satisfactory.

对羊毛，丝绸，尼龙有较好的亲和力，且水洗牢度均高于3级，但日晒牢度相对较低。