free-piston
freepoint-string
free-precession
free-progressive
free-radical
free-railing
free-range
free-roller
free-rotor
free-route
  free-running
free-space
free-springing
free-standing
free-steered
free-stream
free-surface
free-swimming
free-swing
free-vortex
free-water

    free-running parallel inverter

    параллельный инвертор с самоуправлением