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бета-источник stresses
Makarov.	beta source
nucl.phys., радиоакт.	beta-emitting nuclide; beta-emitting radionuclide; ß-emitter; ß-emitting nuclide; ß-emitting radionuclide; beta decay radionuclide (radioisotope); ß-decay radionuclide (radioisotope); beta-active nuclide; ß-active nuclide; beta-radioactive nuclide; ß-radioactive nuclide; beta-radiator; ß-radiator
радиоакт.	beta emitter

бета-источник: 18 phrases in 4 subjects

Makarov	1
Metrology	2
Technology	1
Радиоактивное излучение	14