go-no-go gauge
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- optical deformation
- filters
- holographic gratings
- chronophotography
- metacrystalline
- astrospectrograph camera
- infra-red beam folower
- Varotal lens
- optical harmonic generation
- time-averaged shadow-moire method
- mode pattern
- intensifying screen
- multilongitudianl-mode laser
- diatomic roto
- frequency summing
- upper state relaxation
- geometrical focus
- optical head controllers,control ics/modules
- push out
- visible emissivity