ferrous sulphate

例句：

1. 1. This chemical is commonly used in the production of ferrous sulphate.
   这种化学物质常用于生产硫酸亚铁。
2. 2.The plant extracts iron from the soil using this compound.
   该植物使用这种化合物从土壤中提取铁。
3. 3.The ferrous sulphate solution is used as a preservative for food storage.
   硫酸亚铁溶液用作食品储存的防腐剂。