roll - satu
- root mean square standard deviation
- root mean square value
- rootdozer
- rope bridge
- rope handhold for tankborne party
- rope method
- rope pulley block
- rope railway
- rope reeve excavating bucket
- rope removal of mines
- rosette injector
- roster scan
- rotary abutment engine
- rotary acceleration factor
- rotary antenna
- rotary blower
- rotary connection
- rotary converter
- rotary displacement meter
- rotary drilling
- rotary extrusion
- rotary feed
- rotary hydraulic engine
- rotary meter
- rotary mixer
- rotary periscope
- rotary piston
- rotary plunger selector
- rotary scanner
- rotary stability derivative
- rotary table
- rotary tape actuator
- rotary type winding machine
- rotary wing aircraft
- rotary wing recovery system
- rotating
- rotating appendage fixed base eigenfunction
- rotating base
- rotating bearing seal
- rotating bolt
