three-cornered
three-deck
three-degree-of-freedom
three-dimension
three-dimensional
three-dimensionally
three-edge
three-element
three-engined
three-flow
  three-gun
three-halves-power
three-high
three-hinged
three-indication
three-input
three-jawed
three-lane
three-layer
three-lens
three-level

    three-gun tube

    трехпрожекторная трубка