略語大辞典 [Opt] 21 FDOR frequency domain optical reflectometer 周波数領域光反射測定器. 光ファイバー測定器.frequency domain optical reflectometer; ref. OTDR(optical time domain reflectometry); a measurement technique of optical fibers; [Opt:Mes:Phys]. 丸善「略語大辞典」JLogosID : 11874702