It was most advantageous to the coagulation that made the raw influent wastewater acidify 20 hours.

对猪场废水酸化20h对混凝最为有利.

N deposition can acidify the soil and leaching the exchangeable base cations.

氮沉降能引起土壤酸化，同时造成土壤盐基离子淋失。

Copper was reduced by formaldehyde which was contained in the effluent of chemical copper plating, and EDTA in the effluent was reclaimed after acidify.

探讨了利用原化学镀铜废液中的甲醛将铜还原，后酸化回收EDTA的新工艺。

Adding vinegar will acidify the solution.

加醋会使溶液变酸。