萃余液经萃取除杂后，获一定量的荧光级氧化铕产品。

After the impurities were extracted from raffinate, some products of fluorescent grade europia were produced.

youdao

萃余液经萃取除杂后，获一定量的荧光级氧化铕产品。

After the impurities were extracted from raffinate, some products of fluorescent grade europia were produced.

youdao