forward ratio — передаточное число ступеней переднего хода
speed ratio — передаточное число, передаточное отношение
reverse ratio — передаточное число ступеней заднего хода
direct drive ratio — передаточное число простой передачи
reflux ratio — коэффициент дефлегмации; флегмовое число
The English-Russian dictionary general scientific. 2015.
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