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фотореле n stresses
el.	Allstrom relay; light-activated switching relay; Allström relay
electr.eng.	photoelectric switch; daylight sensor (wandervoegel)
energ.ind.	light sensor (just_like_me)
mil., avia.	photoconductive relay
roll.	scanner
tech.	light relay; light-sensitive device; photocell relay; photoelectric relay; photorelay; photoswitch; phototube relay; photo-relay; sun relay (Delfin)
telecom.	photo relay

фотореле: 10 phrases in 4 subjects

Automated equipment	1
Electrical engineering	1
Nuclear physics	1
Technology	7