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полезное действие stresses
avia.	Nutzwirkung f
el.	Nutzeffekt m
tech.	Lichtwirkungsgrad m; Wirkungsgrad m

полезное действие: 331 phrases in 57 subjects

Accumulators	1
Aerodynamics	4
Antennas and waveguides	2
Artillery	4
Astronomy	4
Automated equipment	2
Automobiles	2
Aviation	14
Biology	1
Brewery	2
Chemistry	3
Cinema equipment	2
Computers	2
Construction	10
Distillation	1
Drives	2
Economy	2
Electricity generation	1
Electronics	29
Energy industry	68
Energy system	2
Engines	3
General	1
Hydrology	4
Machinery and mechanisms	3
Management	1
Mathematics	5
Meat processing	1
Mechanic engineering	1
Metallurgy	7
Metalworking	17
Military	2
Mining	17
Missiles	1
Natural resourses and wildlife conservation	2
Nautical	15
Navy	2
Nuclear and fusion power	2
Nuclear physics	1
Oil / petroleum	2
Optics branch of physics	1
Polymers	1
Public utilities	1
Pumps	1
Quantum electronics	1
Radio	22
Rail transport	3
Refrigeration	1
Road works	1
Shipbuilding	4
Silicate industry	2
Sports	1
Technology	22
Thermal engineering	1
Turbines	8
Water supply	14
Welding	2