DICT.TW Dictionary Taiwan

 tri·plex /ˈtrɪˌplɛks, ˈtraɪ-/
 (a.)三重的三人一組,三個一幅,三拍子

 Tri·plex a. Mach. Having three principal operative parts or motions, so as to produce a three-fold effect.
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 triplex
      adj : having three units or components or elements; "a ternary
            operation"; "a treble row of red beads"; "overcrowding
            made triple sessions necessary"; "triple time has three
            beats per measure"; "triplex windows" [syn: ternary,
            treble, triple]