| 1. | Ordinarily, standard ferrors sulfate loses strength with age, due to air oxidation .
标准硫酸亚铁盐类由于受到空气的氧化一般会随时间而失去其作用。 |
| 2. | The treatment sequence involved addition of ferrous sulfate for precipitation, and subsequence filtration .
处理步骤是先加硫酸亚铁使之沉淀，然后过滤。 |
| 3. | It is noteworthy that best copper removal occurred at ph 6. 0, with the addition of ferrous sulfate only .
显然，除铜率最高是在PH值6只加入硫酸亚铁之时。 |
| 4. | Chemical reagents . iron sulfate heptahydrate
化学试剂七水合硫酸亚铁 |
| 5. | Solid waste - determination of chromium - titrimetric method
固体废物六价铬的测定硫酸亚铁铵滴定法 |
| 6. | Solid waste - determination of total chromium - titrimetric method
固体废物总铬的测定硫酸亚铁铵滴定法 |
| 7. | Determination of vanadium content - ammonium ferrous sulfate titration method
硫酸亚铁铵滴定法测定钒量 |
| 8. | The ferrous sulfate volumetric method for the determination of vanadium content
硫酸亚铁容量法测定钒量 |
| 9. | The ammonium ferrous sulfate volumetric method for the determination of chromium content
硫酸亚铁铵容量法测定铬量 |
| 10. | Ferrous sulfate injection pump
硫酸亚铁喷射泵 |
