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频率 pín lǜ
IMF.	Häufigkeit f
math.	Frequenz f

频率: 128 phrases in 15 subjects

Automatic control	9
Electric machinery	2
Electrical engineering	1
Electronics	10
International Monetary Fund	3
Mathematics	38
Nuclear physics	1
Physics	2
Piezoelectric crystals	42
Power system protection	1
Radio	4
Semiconductors	3
Statistics	7
Thermal Energy	4
Welding	1