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Перевод: cesium

[существительное]
цезий

Тезаурус:

1. The definition of a second has since officially been the time it takes a cesium atom to make 9,192,631,770 vibrations.
2. For example, although radium has now been replaced by safer isotopes such as cesium and cobalt, this has also entailed new or modified applicators, altered dose rates, and changes in the number of treatments.
3. During irradiation, food is exposed to gamma rays from sources such as cobalt 60 or cesium 137.