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to phrases
天然放射性本底
tiānrán fàngshèxìng běndǐ
stresses
gen.
естественный фон радиоактивности
med.
естественный радиационный фон
天然放射性本底【核】
tiānrán fàngshèxìng běndǐ
el.
естественный фон радиоактивности
天然放射性本底:
1 phrase
in 1 subject
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