He was pasting up the holes in the glass with brown paper.

他用牛皮把玻璃上洞孔封住。

For example, in bondid hygrogram, the absolute humidity bleaching Board for up to 6%, and the absolute unbleached kraft paper up to 7.5% humidity.

例如，在相湿量下，不染湿量可达6%，未不染牛皮湿量可达7.5%。