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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
waggish
waggle
wagon
wagon train
wagtail
wagwan
waif
waifs and strays
wail
wainscot
wainscoting
waist
waistband
waistcoat
waist-deep
-waisted
waist-high
waistline
waist training
wait
wait a minute/second
wait a minute/second
wait and see
wait around
wait at table/on tables
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更新时间:2025/3/27 12:10:07