frequency
frequency-analysis
frequency-division
frequency-halving
frequency-shaped
frequency-sharing
frequency-shift
frequency-to-number
frequently
fresh
  friction
friendliness
friendly
fries
frob
frobnicate
frog
froggy
from
front
front-end

    friction wheel integrator

    интегратор с фрикционным роликом, фрикционный интегратор