unho - valv
- unhooking
- uniaxial stress
- uniform acceleration
- uniform circular motion
- uniform distribution
- uniform flow
- uniform load
- uniform motion
- uniform movement
- uniform pressure
- uniform scale
- uniform velocity
- uniformity
- uniformly accelerated motion
- uniformly distributed load
- uniformly retarded motion
- union nut
- unit
- unit bore system
- unit built machine tool
- unit cell
- unit cooler
- unit of measurement
- unit of tolerance
- unit shaft system
- unit type head
- unit vector
- universal chuck
- universal dividing head
- universal drilling machine
- universal gas constant
- universal gravitation
- universal grinder
- universal industrial robot
- universal joint
- universal joint drive
- universal joint fork
- universal joint shaft
- universal joint yoke
- universal machine tool
