"accepted"@en . . "2017-04-03 12:13:14.0" . "SDN:P01::TRTM2WAY" . "SDN:P01::TRTM2WAY" . . "Time taken for an acoustic signal to travel from transmitter to reflector and then back to a receiver co-located with the transmitter"@en . . "2017-04-03 12:13:14.0" . "2" . . "Two-way travel time of sound in the water body by echo sounder"@en . "false" . . . "2" . "TravTime2-way" . . "SDN:P01::TRTM2WAY" . .