dual-fuel engine

engine capacity / engine power, engine output

Proton Exchange Membrane Fuel Cell (PEM fuel cell, PEMFC)

reaction engine / motor (jet engine)

rotary engine (Wankel engine)

engine ground run / engine test

engine oil reservoir / engine oil tank

airbreathing jet engine / ducted jet engine

dual purpose

dual warhead

dual-capable unit

dual-firing circuit

dual-purpose

dual-purpose improved conventional munition (DPICM)

dual-purpose products

dual-purpose technology

dual-role aircraft

dual-thrust rocket motor

dual-use commodity

dual-use technology

High Explosive Dual Purpose (HEDP) Grenade (known as M40)

Wassenaar Arrangement on Export Controls for conventional arms and dual-use goods and technologies

Dual-Capable Aircraft (DCA)

dual-point load rigging procedures

dual axis rate transducer

dual bell двопозиційне

dual capability

dual ignition

dual spacing of twin tires

dual tire wheel

dual trigger arrangement

dual-driving controls

dual-purpose armament