- torque
- trailing vortices
- training reactor
- transcalent
- transducer
- transducer loss
- transducer sensitivity
- transfer canal
- transfer port
- transferred image
- transformation theory
- transit fiberoptic
- transition enthalpy
- transition point
- transport mechanism
- transportable reactor
- transuranic nuclide
- transverse component
- transverse magnetization
- transverse magnification
- trapped particle
- transition loss
- transmission gain
- transmission power
- transmittance density
- transmitted beam
- transmitted wave
- transparency
- transposing frame
- traveling manipulator
- traveling microscope
- travelling manipulator
- tray
- tremolo
- tribology
- trigger
- triple beam
- triplet lens
- triggering systems
- trill
- triode
- trip
- tripod head
- tripper
- tritiated compound
- tropospheric duct
- true density
- transient equilibrium
- transient oscillation
- translucent medium
- translucent substances
- transmission coefficient
- transmission optics
- transmission spectrum
- transmission technique
- travelling microscope
- tube nest
- tube plate
- tubulure
- tunneling mode
- tunneling ray
- tunnelling ray
- turbine stop
- trial solution
- trichroic
- trip gear
- tripod bush
- tritium extraction
- true south
- tube bundle
- tube holder
- tune
- tuning characteristics
- tunnelling mode
- turbidity meter
- turbojet engine
- turboshaft engine
- turbulent diffusion
- turbulent separation
- turbulent spot
- turning gear
- ultimate installation
- ultracold neutron
- ultrapasteurization
- ultrasound scan
- ultravacuum
- ultraviolet catastrophe
- ultraviolet light
- ultraviolet microscope
- ultraviolet photography
- ultraviolet spectrum
- unavailability time
- unburned uranium
- uncollided neutron
- undamped vibration
- turning couple
- ultra-microanalysis
- ultrasound generator
- ultraviolet
- ultraviolet lamp