adding-alkali aeration method的用法和样例：
- The methanol rectification process was introduced and the process of adding alkali or not was compared.
- The results show that using 75% ethanol to extract lappaconitine gets over the problem which was brought by adding alkali traditionally.
- Based on the principle of suction, a natural aeration method is proposed for prevention of Karst collapse, which has been tried in some areas in China with satisfactory results.
- As compared with the present technology at home and abroad, the technological process need not add alkali to conduct a saponified reaction progress.
- The practice was done according to different process of BAF in different aeration methods and filter diameters, the practice showed be feasible.