dist - dual
- dose field
- dose rate
- dosimeter
- double
- double acting actuator
- double acting pile hammer
- double acting rotary engine
- double action pump
- double amplitude
- double anti tank mine
- double apron entanglement
- double barrel carburettor
- double base powder
- double base propellant
- double bluff mine
- double brake chain
- double break contact
- double center theodolite
- double check valve
- double concertina
- double crossover
- double dapped joint
- double deck coach
- double delta wing
- double differential
- double direction running
- double dot display
- double draw bridge
- double end wrench
- double ended card
- double ended micromodule
- double ended module
- double feedback
- double launch
- double leaf bascule bridge
- double leafed closure
- double level bridge
- double line automatic block system
- double line block system
- double line railway
