磷酸钠

zhòng diǎn lùn shù le cì lín suān nà gōng yè shēng chǎn zhong de zá zhì qù chú wèn tí

重点论述了次磷酸钠工业生产中的杂质去除问题。

The impurities removing in production of sodium hypophosphite is focused in the paper.