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to phrases
protactinium
[prəʊtæk'tiniəm]
n
stresses
chem.
протактиний
(Pa, 91-й элемент таблицы Менделеева)
;
протактиний
el.
протактиний Ра
(Pa)
energ.ind.
протактиний
(химический радиоактивный элемент из семейства актинидов)
tech.
Ра
protactinium:
12 phrases
in 4 subjects
Chemistry
2
Electronics
2
Geophysics
4
Makarov
4
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