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выбитый электрон stresses
biol.	expelled electron
geophys.	ejected electron
hi.energ.	delta ray; δ-ray; delta; delta-electron (δ); δ-electron; delta particle; δ-particle; knocked-on particle; knock-on
nano	knocked-on electron
tech.	delta electron; knock-on electron
радиоакт.	delta-electron