chrome alum
chrome-alum的词性:n.(名词)
1. A violet-red crystalline compound, CrK(SO4) 2·12H 2O, used in tanning, as a mordant, and in photography. 铬矾,硫酸铬钾:一种紫红色的结晶化合物,CrK(SO4) 2·12H 2O,作为腐蚀液用于制革和照相