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单词
protactinium
释义
protactinium
noun
uncountable
chemistry
UK
/
ˌprəʊtækˈtɪniəm
/
DEFINITIONS
1
1
a chemical element that is a radioactive metal. Its symbol is Pa.
Synonyms and related words
Chemical elements
actinium
alkali metal
aluminium
protactinium
noun
uncountable
chemistry
US
/
ˌproʊtækˈtɪniəm
/
DEFINITIONS
1
1
a chemical element that is a radioactive metal. Its symbol is Pa.
Synonyms and related words
Chemical elements
actinium
alkali metal
aluminum
随便看
crown
crown court
crowned head
crownie
crowning
crowning glory
crown jewels
crown prince
crown princess
crown prosecutor
crow’s feet
crow’s nest
crt
crucial
crucially
crucible
lagom
lagoon
lah
lah-di-dah
lahmacun
laid
laid-back
lain
lair
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更新时间:2025/3/22 15:50:05