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单词 thorianite
释义

WordReference Random House Unabridged Dictionary of American English © 2024
tho•ri•a•nite  (thôrē ə nīt′, thōr-),USA pronunciation n. 
  1. Mineralogya rare mineral, mainly thoria, ThO2, but also containing uranium, cerium, and other rare-earth metals, occurring in small, black, cubic crystals: notable for its radioactivity and used as a minor source of thorium.
  • thorian (thori(a) + -an) + -ite1 1900–05

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