This invention relates to an improvement of recovering trace Ag from waste developing and printing liquor of film.

本发明属于胶片洗印水洗水中痕量银回收方法的改进。

youdao

This invention relates to an improvement of recovering trace Ag from waste developing and printing liquor of film.

本发明属于胶片洗印水洗水中痕量银回收方法的改进。

youdao