red vitriol

• 赤矾

red vitriol的用法和样例：

例句

1. This iron red is made from the ferriferous solution that is made from sulfric acid slag.
   提出并研究了空气氧化分离铵黄铁矾制备高挡铁红颜料的工艺路线，初步确定了一些主要工艺参数。