free-air
free-block
free-carrier
freedom
free-electron
free-field
free-free
free-hole
free-ion
free-line
  freely
free-motional
free-point
free-radical
free-running
free-space
freeway
freeze
freeze-out
freezing
freezing-out

    freely oscillating coupled circuits

    связанные контуры в режиме собственных колебаний