Cas号7440-27-9分子式Tb分子量158.93别名铽terbium铽粉:含量assay99.9%高纯金属铽:TREM(%,Min)99.5Tb/TREM(%,Min)99.99稀土杂质RareEarthlmpurities(%,Max)Eu0.0001Gd0.002Dy0.002Ho0.0008Y0.0005非稀土杂质Non-RElmpurities(%,Max)Fe0.01Si0.002Ca0.002Mg0.0008Al0.008Ni0.0008C0.006O0.014)