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on signal stresses
navig.	по сигналу
on a signal
gen.	по команде; по сигналу
ON signal
Apollo-Soyuz	сигнал на включение
on someone's signal
gen.	по чьей-либо отмашке (Bravo Two-Two, stack up on the door and prepare to breach on my signal. 4uzhoj)

on signal: 119 phrases in 28 subjects

Advertising	1
Apollo-Soyuz	11
Armored vehicles	1
Astronautics	2
Automated equipment	9
Automobiles	1
Aviation	4
Communications	1
Computers	2
Drilling	1
Electronics	10
General	1
Hydroelectric power stations	1
Information technology	1
Makarov	20
Mass media	6
Mechanics	1
Military	9
Nanotechnology	2
Occupational health & safety	1
Programming	6
Radio	1
Radiolocation	1
Rail transport	7
Robotics	2
Technology	9
Telecommunications	6
Telephony	2