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бета-активное веществоstresses
mil. beta particle emitter; beta emitter; beta-active emitter
tech. beta-radioactive substance; beta-active substance
радиоакт. beta radioactive material; beta active material; ß-radioactive material; ß-active material; beta radioactivity; ß-radioactivity; beta activity
бета- активное вещество: 7 phrases in 3 subjects
Military1
Nuclear physics2
Радиоактивное излучение4