The sample is purified by extraction and cation exchange method, therefore obtaining satisfactory results.

试样之处理采用萃取法和离子交换法，得到满意的结果。

youdao

The sample is purified by extraction and cation exchange method, therefore obtaining satisfactory results.

试样之处理采用萃取法和离子交换法，得到满意的结果。

youdao