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单词 thorianite
释义 thorianite
 /thawr"ee euh nuyt', thohr"-/,  n.  
 a 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.
 [1900-05; thorian (THORI(A) + -AN) + -ITE1]
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更新时间:2025/2/15 19:53:11