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单词
thorianite
释义
WordReference Random House Unabridged Dictionary of American English © 2024
tho•ri•a•nite
(thôr
′
ē ə nīt′, thōr
′
-),
USA pronunciation
n.
Mineralogy
a rare mineral, mainly thoria, ThO
2
, 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
) + -
ite
1
1900–05
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heptahedrical
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更新时间:2025/2/23 1:32:15