- tonal quality
- tone generation
- tone pulses
- top cap
- topocentric angle
- topside sounding
- topside sounder
- toroidal antenna
- torque amplifier
- total conductivity
- total impulsion
- total interference
- touch-down
- trace gas
- tracer composition
- tracing
- track format
- tracking error
- tracking lobe
- tracking oscillator
- tracking symbol
- total capacitance
- total configuration
- total emission
- total heat
- total noise
- touch-sensitive
- trace format
- trace integration
- track density
- track index
- track recorder
- tracking centre
- tracking motion
- tracking station
- torque
- tower clearance
- tower removal
- Townsend discharge
- TR tube
- trace
- trace blanking
- trace index
- trace intensification
- track selector
- track width
- tracker
- tracking accuracy
- tracking antenna
- tracking filter
- tracking radar
- tractor feed
- traffic backlog
- traffic capacity
- traffic carried
- traffic circuit
- traffic control
- traffic demand
- traffic density
- traffic information
- traffic load
- traffic matrix
- traffic signal
- traffic stream
- traffic supervision
- traffic surveillance
- trailer
- trailer card
- trailer edge
- trailer satellite
- trailer section
- trailing antenna
- trailing edge
- trailing noise
- trailing shock
- trainee
- trainer
- training antenna
- training model
- training period
- training signal
- tram lines
- transaction code
- transaction data
- transaction file
- transaction key
- transaction recovery
- transcoding equipment
- transcription
- transequatorial path
- transfer admittance
- transfer allowed
- transfer ellipse
- transfer loop
- transfer matrix
- transfer orbit
- transfer oscillator
- transfer ratio
- transient effect
- transient sideband