词The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.
用萃取法从钨
渣制得纯度为99．99％的氧化钪。
The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.
用萃取法从钨渣制得纯度为99．99％的氧化钪。
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