Time Domain Reflectometry 
Time Domain Reflectometer 
Technical Design Review 
Test Discrepancy Report 
Technical Documentation Report 
Time Delay Relay 
torque differential receiver 
Target Discrimination Radar 
Technical Data Relay 
Telecommunications for Disaster Relief 
Temperature-Dependent Resistor 
Test Discrepancy Record 
Time-Dependent Routing 
Tracking Data Relay 
Transportation Discrepancy Report 
Taiwan Depository Receipt 
Target Data Response 
Teardown Deficiency Report 
Technical Data Report 
Telemetry Data Receiver 
Temperature Data Record 
TEMPERATURE DATA RECORDS 
Terminal Defense Radar 
Test Deficiency Report 
Tracking Data Reformatter 
Tracking Discrepancy Report 
Training Device Requirement 
Transfer Development Rights 
Transfer of Development Rights 
TRANSMIT DATA REGISTER