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разведка средствами связи stresses
astronaut.	signal reconnaissance
Gruzovik, intell.	signals intelligence; SIGINT (signals intelligence)
mil.	communication intelligence; communication reconnaissance; COMINT (communications intelligence WiseSnake)
tech.	communications and reconnaissance
разведка средств связи
data.prot.	communication intelligence
el.	communication reconnaissance
mil.	communications surveillance; communications intelligence

разведка средствами связи: 9 phrases in 3 subjects

Aviation	1
Military	5
Technology	3