- turret slide
- tuyere
- tweezers
- twin
- twin bank engine
- twin boom aircraft
- twin core cable
- twin cylinder
- twin cylinder engine
- twin drive
- twin engine aircraft
- twin filter
- twin fuselage aircraft
- twin hull ship
- twin jet aircraft
- twin jet airplane
- twin rotor helicopter
- twin rudder
- twin screw ship
- twin screw vessel
- twin tail
- twin tire
- twinning
- twist
- twist drill
- twist drill grinder
- twist drill milling machine
- twisted blade
- twisting force
- twisting machine
- twisting moment
- two bank engine
- two blade propeller
- two core cable
- two cycle
- two cycle engine
- two cylinder steam engine
- two dimensional flow
- two dimensional stress
- two high mill
- two high plate mill
- two line lubrication system
- two lip end mill
- two motor drive
- two phase flow
- two phase system
- two plane balancing
- two row ball bearing
- two seater airplane
- two shaft gas turbine