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信号器 xìnhàoqì stresses
el.	аварийный сигнал; сигнал тревоги
O&G	извещатель
product.	индикатор сигнала
railw.	сигнализационный аппарат
tech.	сигнальный аппарат; сигнализатор; сигнальный прибор

信号器: 841 phrases in 41 subjects

Astronautics	8
Automated equipment	7
Automobiles	1
Aviation	26
Cartography	1
Computers	1
Drilling	1
Electric machinery	3
Electrical engineering	2
Electricity	3
Electronics	54
Energy industry	1
Firefighting and fire-control systems	1
General	253
Helicopters	2
Household appliances	2
Hydraulics	2
Information technology	1
Jet engines	1
Mathematics	1
Mechanics	1
Medical	1
Military	19
Mining	2
Nanotechnology	2
Nautical	9
Nuclear and fusion power	3
Oil / petroleum	1
Oil and gas	4
Oil processing plants	5
Photography	1
Production	1
Radio	11
Radiolocation	2
Rail transport	6
Seismology	1
Shipbuilding	1
Signalling	1
Technology	390
Telecommunications	5
Television	4