略語大辞典 [C] 23 PU physical unit (データ通信の)物理装置. physical unit; in a data communication protocol; ref. physical layer, in OSI(open systems interconnection) model; e.g. in SNA(systems network architecture) by IBM; ref. LU(logical unit); [C]. 丸善「略語大辞典」JLogosID : 11856904