短語詞組短語optical pulse reflectometer 光脈沖反射計(jì)Optical TimeDomain Reflectometer OTDR 光時(shí)域反射計(jì)optical time domain reflectometer 光時(shí)域反射儀;時(shí)域反射儀;光時(shí)域反射技術(shù);反射測試optical frequency domain reflectometer 光頻域反射計(jì)optical coherence domain reflectometer 光相干域反射儀Optical Time Doman Reflectometer 光時(shí)域反射線coherent optical time domain reflectometer 相干光時(shí)域反射儀Optical Time Domain Reflectometer OTDR 光時(shí)域反射計(jì)OCWR Optical Continuous Wave Reflectometer 連續(xù)光波發(fā)射器 返回 optical reflectometer