研究了高锰酸钠预氧化对混凝过程的助凝作用。

The coagulation-supporting effect of the pre-oxidation of sodium permanganate in the process of coagulation was studied.

youdao

研究了高锰酸钠预氧化对混凝过程的助凝作用。

The coagulation-supporting effect of the pre-oxidation of sodium permanganate in the process of coagulation was studied.

youdao