phas - plas
- pickup tube
- picrate
- picric acid
- picric powder
- pictorial deviation indicator
- pictorial display and course line computer
- pictorial information
- picture pattern
- picture quality
- picture transmission
- pie chart of impedances
- piece of armor
- piece of the charge
- piece to mask range
- pier axis
- pierced primer
- piercing power
- piezoelectric ceramics
- piezoelectric effect
- piezoelectric element
- piezoelectric loudspeaker
- piezoelectric microphone
- piezoelectric transducer
- piezooptic effect
- piezoresistive
- pig trap
- piggy back control
- piggy back launch
- piggy back operations
- pigment coating
- pike staff
- pile arrangement
- pile bridge
- pile drawing machine
- pile driving
- pile driving equipment
- pile driving frame
- pile trestle
- piling home
- piling up
