Synthesis of PPSA as a phosphorus-containing polymer water treatment agent;

甲壳胺是一种无毒、无公害、价廉的天然水处理剂。

youdao

Synthesis of PPSA as a phosphorus-containing polymer water treatment agent;

甲壳胺是一种无毒、无公害、价廉的天然水处理剂。

youdao