Большой англо-русский и русско-английский словарь
propagation factor, propagation ratio
Англо-русский словарь технических терминов
propagation coefficient, propagation constant, propagation factor, propagation ratio
Русско-английский политехнический словарь
propagation coefficient, propagation constant, propagation factor, propagation ratio
Dictionnaire technique russo-italien
fattore di propagazione