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frecuencia f
math.	częstotliwość f; częstość

frecuencia: 431 phrases in 40 subjects

Antennas and waveguides	6
Automatic control	9
Chemistry	2
Communications	32
Economy	1
Electric machinery	5
Electric motors	9
Electric traction	3
Electricity generation	6
Electronics	75
Finances	3
Information technology	1
Lighting other than cinema	2
Magnetics	9
Mathematics	46
Microsoft	10
Nuclear physics	1
Physical sciences	2
Physics	2
Piezoelectric crystals	38
Plastics	2
Power electronics	3
Power lines	14
Power system protection	2
Radio	66
Radiology	1
Reliability	12
Resins	1
Satellite communications	2
Semiconductors	4
Sound recording	5
Statistics	6
Telecommunications	4
Telegraphy	11
Telephony	7
Thermal Energy	16
Transport	1
Vacuum tubes	8
Video recording	3
Welding	1