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радиоактивные изотопы | |||
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радиоактивный изотоп (An unstable isotope of an element that decays or disintegrates spontaneously, emitting radiation. Approximately 5000 natural and artificial radioisotopes have been identified.) | |||
радиоактивный изотоп | |||
изотоп радиоактивный | |||
радиоизотоп |
radioisotopes: 131 phrases in 25 subjects |