unst - velo
- Unstab
- unstabillised
- unstripped
- Unstrp
- upper circulation reflux
- upper-level query
- UPS
- upstream & downstream controller
- urea dosing pump
- urea tank
- US
- user account
- user application ID
- user defined
- user verification function
- UT
- utilities
- utility and site conditions
- utility metering system
- utility water
