The effect of the contacting time, the pH of sewage, the amount and diameter of fly ash was studied.
探讨了接触时间、污水酸度、粉煤灰用量、粉煤灰粒径等因素对处理效果的影响。
Pretreatmented solution is subjected to double precipitation first with ammonium bicarbonate and then with oxalic acid to obtain pure RE. Precipitating ratio, PH and amount of …
控制沉淀比、酸度和硫酸铵含量等条件，都可提高稀土纯度，且适合于处理各种料液。
It is verified that ph ase separation of trace amount of water in the organic solvent is the most possible course of vacuole formation.
实验证明，气泡主要是由于有机溶剂中微量水的微相分离造成的。
应用推荐