relay logic - restringing
- reproductive probability
- reproductivity
- reprogramming
- reprogramming actions
- reptile
- republican (regional) testing center
- repudation
- repudiation
- repulse
- repulsion
- repulsion hypothesis
- repulsion induction motor
- repulsion iron-vane instrument
- repulsion start induction motor
- repulsive
- repulsive force
- repulsive suspension
- repurchase
- reputable formula
- requalification
- request
- request block
- request for a release
- request for additional information
- request for allocation
- request for alteration
- request for change
- request for clarification
- Request For Comments
- request for corrective action
- request for delivery instructions
- request for design modification
- request for engineering change
- request for engineering investigation
- request for information
- request for information clarification
- request for information or clarification
- request for neutron data measurement
- request for payment
- request for procurement
