China
Africa
- Room air distribution
- Room and pillar
- Room and pillar mining
- Room for the River
- Room temperature
- Root
- Root canal
- Root cause analysis
- Root directory
- Root exudates
- Root hairs
- Root locus
- Root locus analysis
- Root microbiome
- Root nodules
- Root resorption
- Root sheath
- Root system
- Root test
- Root-finding algorithms
- Root-knot nematodes
- Root-raised-cosine filter
- Rootkits
- Roots
- Roots blowers
- Roots of unity
- Rope
- Rosacea
- Rose oxide
- Rosemary
- Rosetta
- Rosette sampler
- Rosiglitazone
- Rosin
- Ross procedure
- Rossby waves
- Rossmann fold
- Roster
- Rosuvastatin
- Rotameters
- Rotary actuator
- Rotary dryer
- Rotary encoder
- Rotary engines
- Rotary feeder
- Rotary hammer
- Rotary kilns
- Rotary stage
- Rotary steerable systems
- Rotary switch
- Rotary table
- Rotary tool
- Rotary transformer
- Rotary valves
- Rotary vane pump
- Rotating biological contactor
- Rotating detonation engine
- Rotating magnetic field
- Rotating reference frame
- Rotating wave approximation
- Rotating-wave approximation
- Rotation
- Rotation number
- Rotation of axes
- Rotation period
- Rotational brownian motion
- Rotational correlation time
- Rotational diffusion
- Rotational energy
- Rotational frequency
- Rotational molding
- Rotational spectroscopy
- Rotational speed
- Rotational symmetry
- Rotational temperature
- Rotational viscosity
- Rotator cuff
- Rotator cuff tear
- Rotavirus
- Rotaxanes
- Rotenone
- Rotodynamic pump
- Roton
- Rotor
- Rotor ship
- Rotor wing
- Rotorcraft
- Rotordynamics
- Rotunda
- Rough set
- Roughing pump
- Roughness length
- Rouleaux
- Round
- Round robin tests
- Round window
- Round-off error
- Round-robin
- Round-robin scheduling
- Round-robin test
- Round-trip delay
- Roundabouts
- Rounding
- Roundness
- Roundup
- Route
- Route capacity
- Route of administration
- Router
- Routing
- Routing and wavelength assignment
- Routing loops
- Routing protocol
- Routing table
- Roux-en-y
- Rovers
- Roving
- Row
- Row echelon form
- Row-major order
- Rowing
- Rowing cycle
- Roxarsone
- Rprop
- Rubber
- Rubber cement
- Rubber elasticity
- Rubber pad forming
- Rubber removal
- Rubber seed oil
- Rubber tyred gantry crane
- Rubber washer
- Rubberized asphalt
- Rubble
- Rubble masonry
- Rubella
- Rubella virus
- Rubia cordifolia
- Rubidium
- Rubidium carbonate
- Rubidium standard
- Rubidium-82
- Rubisco
- Rubredoxin
- Rubrene
- Rubrics
- Ruby
- Ruby laser
- Rudder
- Rudder pedals