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излучатель позитроновstresses
Makarov. positron emitter; positron radiator
радиоакт. positron-emitting radionuclide; beta-plus emitter; β+ emitter; beta-plus decay radionuclide (radioisotope); ß+-decay radionuclide (radioisotope); beta-plus-active nuclide; beta-plus-radioactive nuclide; ß+-active nuclide; ß+-radioactive nuclide