rise (n)  INCREASE (v)  WHEN A FIRE STARTS, THE TEMPERATURE INCREASES AND CAUSES THE DETECTOR TO OPERATE.  When a fire starts, the temperature rise causes the detector to operate.
 rise (v)  INCREASE  USE A PUMP TO FILL THE STRUT WITH FLUID UNTIL THE PRESSURE INCREASES.  Pump fluid into strut until pressure rises.
 RISK (n)  The "possibility" that something that is dangerous occurs  OBEY THE PRECAUTIONS TO PREVENT THE RISK OF FIRE.  
 roll (v)  ROLLER (TN)  USE A ROLLER TO MAKE THE SURFACE OF THE SEAL SMOOTH.  Roll entire surface of seal until smooth.
 rope off (v)  ROPE (TN)  PUT ROPES AROUND THE AREA.  Rope off the area.
 rotary (adj)  TURN (v)  TURN THE GEARS TO ALIGN THEM.  Use rotary movement to align the gears.
 rotate (v)  TURN  SLOWLY TURN THE VANE.  Slowly rotate vane.
 rotation (n)  TURN (v)  MAKE SURE THAT THE FAN TURNS FREELY.  Ensure free rotation of fan.
rotational (adj)  TURN (v)  TURN THE GEARS TO ALIGN THEM.  Use a rotational movement to align the gears.
 ROUGH (adj)
 (ROUGHER, ROUGHEST)  Not smooth  CLEAN THE ROUGH SURFACES CAREFULLY.  
 roughen (v)  ROUGH (adj)  MAKE THE FAYING SURFACES ROUGH.  Roughen the faying surfaces.
 roughness (n)  ROUGH (adj)  MAKE SURE THE AREA OF THE BOND IS SUFFICIENTLY ROUGH.  Make sure the area of the bond has sufficient roughness.

 
 
 round (adj)   CIRCULAR  REPAIR THE DAMAGE WITH A CIRCULAR PATCH.  Repair damage with a round patch.
 ROUNDED (adj)  Not angular  WHEN YOU INSTALL THE PART, MAKE SURE THE ROUNDED EDGE IS AGAINST THE STRUCTURE.  
 route (n)  ROUTING  MAKE SURE YOU DO NOT CHANGE THE WIRE ROUTING.  Make sure you do not change the wire routes.
 route (v)  PUT, ROUTING (n)  PUT THE FUELING HOSE ALONG THE GROUND.  Route the fueling hose along the ground.
       MAKE SURE THE ROUTING OF THE WIRE IS CORRECT.  Make sure that wiring is correctly routed.
 routine (adj)  USUAL  IF SUCH FAILURES BECOME USUAL, REPLACE THE UNIT.  If such failures become routine, replace the unit.
 ROUTING (n)  The specified direction that cables (TN), pipes (TN), wires (TN), etc. must go along  DO NOT CHANGE THE ROUTING OF THE PIPE.  
ROW (n)  A number of objects in a line (TN)  THE PANELS ARE INSTALLED IN ROWS.  
 RUB (v),
 RUBS, RUBBED, RUBBED  To move something with pressure (TN) and friction (TN) along a surface  RUB THE SURFACE WITH A CLEAN CLOTH.  
 run (v)  OPERATE  OPERATE THE ENGINE AT 100% THRUST.  Run engine at 100% thrust.