- resting
- restoration
- restoration design
- restoration work
- restore
- restorer
- restrained torsion
- restraint
- resultant
- resultant gradient
- resultant vector
- resurface
- retain
- retained water
- retaining roller
- retaining structure
- retaining wall
- retardation method
- retarded hardening
- retarded set
- retarder action
- resistance factor
- resister
- resisting torque
- resource limitation
- resources
- respect
- responsive
- rest
- rest camp
- rest on
- rest period
- restaurant range
- restrained beam
- restrained support
- restraint forces
- restrict
- restricted tender
- restrictive condition
- restropective
- resultant acceleration
- resultant moment
- resurvey
- retaining dike
- retarded cement
- retarder
- retarding admixture
- retarding setting
- reticular
- reticulated dome
- retransmitter
- retreatment
- retrieving file
- retrogressive metamorphism
- retroreflection
- retrospection
- return air
- return bead
- return cable
- return key
- return pipeline
- return sludge
- return tunnel
- reuse
- reveal block
- reverberate
- reverberation
- reverberation time
- reverse curve
- reversed arch
- reversible fan
- reversible machine
- reversible tooth
- reversible winch
- revibration
- revolution
- revolver press
- revolving chair
- revolving drier
- revolving louvers
- revolving shovel
- RF amplifier
- rheonomous system
- rheostat
- rhone
- rhyme
- rhythmic
- rhythmical repetition
- rib arch
- ribbed glass
- ribbed plate
- ribbon windows
- rich mix
- ricker
- ridge course
- ridge frame
- ridge pole
- ridge purlin
- ridge skylight
- ridge stone