略語大辞典 [C] 20 BDU broadband distribution unit 広帯域分配装置. 光ファイバー情報網の装置.broadband distribution unit; for fiber-optic information networks; e.g. for ATM(asynchronous transfer mode) technology; ref. AAU(ATM access unit); [C:Opt:Ind]. 丸善「略語大辞典」JLogosID : 11867241