英语语法分析

Sealing sideband lightfastness chroma.

封边带耐光色度。

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。

Fadeometer: An instru we are pirates, these data are stolen from youdao used for determing the lightfastness of inks and other material under predetermined controlled conditions.

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。