1)OTDR,光时域反射计(OTDR)2)optical time domain reflectometer (OTDR),光学时域反射计(OTDR)3)optical time-domain reflectmetry technique(OTDR),OTDR(光时域反射计)技术4)OTDR,光时域反射仪(OTDR)5)optical time domain reflectometry(OTDR),光时域反射(OTDR)6)optical time domain reflectometer(OTDR),光时域反射测量仪(OTDR)
