2025-08-10 21:20 浏览次数 5
[无化]
To make pyroxyle, the cotton must be immersed in the fuming azotic acid for a quarter of an hour, then washed in cold water and dried.
制造棉花火药只要把棉花在发烟硝酸里浸一刻钟,然后在冷水里洗凈晾干。