## 'two-'-'upen'

- two-address instruction
- two-and-a-half dimensional graphics
- two-aspect colour light signal
- two-beaked anvil
- two-bladed airscrew
- two-boat trawl
- two-body force
- two-body problem
- two-box moulding
- two-cavity clystron
- two-circuit NPP
- two-colour
- two-column press
- two-compartment ship
- two-component alloy
- two-component system
- two-conductor wiring system
- two-core cable
- two-core transformer
- two-cycle engine

- two-dimensional
- two-dimensional chromatography
- two-dimensional element
- two-dimensional flow
- two-dimensional geometry
- two-dimensional lighting
- two-dimensional state of stress
- two-dimensional tracer control
- two-draft weighing
- two-drum boiler
- two-drum shear
- two-electrode tube
- two-electron bond
- two-electron shell
- two-fluid cell
- two-fluid manometer
- two-fold axis of symmetry
- two-fold population
- two-frequency radar
- two-furrow plough