two-shaft
two-sheet
two-shift
two-shock
two-shoe
two-shot
two-side
two-sided
two-sigma
two-slag
  two-source
two-spar
two-speed
two-speed-variable-speed
two-spool
two-staff
two-stage
two-state
two-step
two-step-type
two-stopper

    two-source frequency keying

    двухчастотная манипуляция