trip - ultr
- twin plane
- twin pump
- twin shafts
- twin stage
- twin strand armored face conveyor
- twin strand scraper chain conveyer
- twin structure
- twin unit
- twin vortex hydrocyclone
- twin wire
- twin wire cable
- twin-boom carriage
- twin-boom drill rig
- twin-boom jumbo
- twin-boom miner
- twin-boom pneumatic-advance drill wagon
- twin-boom tunnelling jumbo
- twin-bucket
- twin-clamp attachment
- twin-cone bit
- twin-core logging cable
- twin-crawler travel gear
- twin-entry mining
- twin-entry mining method
- twin-jaw crusher
- twin-motor drive
- twin-roll
- twin-rope Koepe winder
- twin-screw
- twin-shaft
- twin-skip system
- twinned
- twinned crystal
- twinned crystals
- twinned intergrowths
- twinned juncture
- twinned nature
- twinned region
- twinned tipper
- twinning
