part - pick
- photometrical measurement
- photometry
- photomicrogram
- photomicrograph
- photomicrographic apparatus
- photomultiplier counter
- photomultiplier tube
- photoneutron method
- photopyrometer
- photoradiography
- photothyratron loop control
- phototube
- photovoltaic effect
- Phragmen focusing camera
- physical crack size
- physical growth
- physical imperfection
- physical kinetics
- physical measurements
- physical metallurgy