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单词 atomic number 73
释义
Atomic Number 73
nnoun.substancea hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
Synset:Ta tantalum
Substance Holonyms:fergusonite columbite niobite tantalite
Hypernyms:metal metallic element
Inherited Hypernyms:tantalummetallic elementchemical elementsubstancematterphysical entityentity
Inherited Hypernyms:tantalummetallic elementchemical elementsubstancepartrelationabstractionentity
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