| 1 | The preparation of Ni- Zn ferrite from sodium jarosite residue was studied. | |
| 2 | Often employ vitriol fat water, can make have a smile on one's face blade is thick green light, plant is exuberant . | |
| 3 | Ethyl decanoate was synthesized from capric acid and ethanol by using ferric potassium alum as catalyst. | |
| 4 | Ethyl decanoate was synthesized from capric acid and ethanol by using ferric potassium alum as catalyst. | |
| 5 | The iron vitriol was used to shorten producing time and the rotten meat was for the tofu's smell. |