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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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lab
Lab.
labarum
labdanum
labefaction
label
labia
labial
labiate
labile
labio-
labiodental
labiovelar
labium
laboratory
labor etc.
laborious
labour
labourer
Labourite
labra
Labrador
labret
labrum
laburnum
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更新时间:2025/11/27 15:19:13