copperas
'kɒpәrәs
基本解释
n. 绿矾
[化] 绿矾; 水绿矾; 皂矾(天然结晶硫酸亚铁)
英文释义
n. Green vitriol, or sulphate of iron; a green crystalline
substance, of an astringent taste, used in making ink, in dyeing black,
as a tonic in medicine, etc. It is made on a large scale by the
oxidation of iron pyrites. Called also ferrous sulphate.
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