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单词 thulium
释义
Thulium
nnoun.substancea soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
Synset:Tm atomic number 69
Substance Holonyms:apatite monazite xenotime
Hypernyms:metal metallic element
Inherited Hypernyms:thuliummetallic elementchemical elementsubstancematterphysical entityentity
Inherited Hypernyms:thuliummetallic elementchemical elementsubstancepartrelationabstractionentity
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更新时间:2024/12/24 8:51:20