In addition, non-coated paper in high-humidity environment of sulfide, chemical pulp and fill applicatron dottle out acid melted, making of gold and silver monlchamus nigrescent who lose their luster.
此外,否涂料纸在矮湿度
境况下,
学纸浆

物以及增添料洋
磕酸矾土感
,也会使纸背上
金、银不朱发黑而获得光华度。
身在我胸怀中
破坏了会倒下,使得无人记起

观点;若发现问题,欢迎向我们指正。


