protection cover - radiant efficiency
- protection cover
- protection lock
- protection of screw joint against self-unscrewing
- protection rating
- protection to class IP66
- protective bonding circuit
- protective conductor
- protective material
- protective power time
- protective-action relay
- protector
- protocol controller
- prototype collection
- prototype connector
- prototype data
- prototype hardware
- prototype instance
- prototype machine
- prototype mold
- prototype object
- prototype stage
- prototype system
- prototype vector
- prototype work
- prototype-producing company
- prototyping
- protractor rim
- protrusion from bearing seal
- protuberance tool
- provability
- prove-out process
- proven job
- proving rotor
- proving stand
- proving trials
- proving-out NC program
- proximity sensor
- proximity switch
- proximity transducer
- proxy
