torc - true
- tritium
- triturating machine
- trivalent gold
- trodaloy
- trolley
- trolley block
- trolley car
- trolley conveyor
- trolley ladle
- trommel
- trommel screen for washing
- Tromp error curve
- troostite
- troostite formation range
- troostite microstructure
- troostite network
- troostite-sorbite quenching
- Tropenas converter
- tropicalization test
- trouble