upda - vide
- update
- update file
- updating
- updating of file
- uplink
- uplink antenna
- upper atmosphere
- upper edge of band
- upper energy level
- upper hybrid resonance
- upper ionosphere
- upper level
- upper magnetosphere
- upper mean hemispherical candlepower
- upper side frequency
- upper sideband
- upper sideband generator
- upper sideband parametric amplifier
- upper sublevel
- upper tolerance
- upper troposphere
- upper valley
- upper-air temperature
- upper-atmosphere temperature
- upper-fixed contact
- upper-sideband upconverter
- upper-state relaxation time
- upperecript
- uptime
- upward cascade
- upward compatibility
- upward jump
- upward modulation
- upward transition
- urgent call
- usable levels
- use attribute
- use environment
- use flip-flop memory
- useful life
