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frequency shifting stresses
automat.	частотный сдвиг (ssn)
mil., air.def.	маневрирование частотами
tech.	смещение частоты; частоты; манипуляция

frequency shifting : 25 phrases in 7 subjects

Air defense	7
Automated equipment	1
Makarov	2
Mathematics	2
Military	7
Non-destructive testing	1
Technology	5