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单词
actinium
释义
actinium
n. Chem. a radioactive metallic element of the actinide series, occurring naturally in pitchblende.
Usage
Symb.: Ac.
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Sitka
sitrep
sits vac
sitter
sitting
situate
situation
sitz-bath
Siva
six
sixain
sixer
sixfold
sixpence
sixpenny
sixte
sixteen
sixteenmo
sixth
Sixtine
sixty
sizable
sizar
size
sizeable
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更新时间:2025/11/18 21:54:25