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单词 atomic number 85
释义
Atomic Number 85
nnoun.substancea highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
Synset:At astatine
Hypernyms:chemical element element halogen
Inherited Hypernyms:astatinechemical elementsubstancematterphysical entityentity
Inherited Hypernyms:astatinechemical elementsubstancepartrelationabstractionentity
Inherited Hypernyms:astatinehalogengroupabstractionentity
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