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SubjectChineseEnglish
met.六价系元素hexavalent actinide
chem.射气actinon
ecol.射气actinium emanation
ecol.系元素actinide elements
ecol.系元素actinide
ecol.系元素核actinoid nuclei
ecol.系收缩actinoid contraction
ecol.actinouranium
ecol.铀系actinouranium series
ecol.铀系uranium actinium series
ecol.铀系actinouranium family