reverse engineering ( back- wards engineering)

back-to-back circuit

back-to-back connection

back-to-back radio stations

back-to-back relay

reverse bearing

reverse gear

reverse one's field

reverse osmosis (water) purification unit (ROPU / ROWPU)

reverse osmosis unit

reverse slope

reverse slope defense

reverse transit

shipboard reverse osmosis desalinator (SROD)

ditch in reverse

ditching in reverse

idler reverse gear

worm reverse gear

engaging reverse gear

reverse idle thrust

reverse-flow

reverse-flow combustion chamber

reverse flow

reverse pitch of airscrew

reverse thrust noise

reverse the field

airfield engineering

airfield-engineering and NAVAID survey

aviation engineering

chemical engineering

civil engineering support

countermobility engineering support

director of defense research and engineering