FR-FR Frame Relay – to – Frame Relay

phase-rotation relay phase-sequence relay

phase-sequence relay phase-rotation relay

slow-release relay (=slow-releasing relay)

capsule-typed telemetric device

Completely optical telemetric system

double telecentric lens

double-telecentric

full-digital telemetric seismic instrument

regional digital seismic telemetric network

Seismic telemetric substation

TDM Telemetric Data Monitor

telecentric

telecentric beam

telecentric beam path

telecentric beam path in image space

telecentric lens

telecentric objective

telecentric optical path