结果表明，复合亚铁絮凝剂效果好、处理成本低，值得推广应用。

Results showed that compound ferrous coagulant was worth applying for its cost effectiveness.

youdao

结果表明，复合亚铁絮凝剂效果好、处理成本低，值得推广应用。

Results showed that compound ferrous coagulant was worth applying for its cost effectiveness.

youdao