circular division tester
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- metacrystalline
- holographic gratings
- astrospectrograph camera
- geometrical focus
- push out
- visible emissivity
- optical harmonic generation
- diatomic roto
- Varotal lens
- optical head controllers,control ics/modules
- upper state relaxation
- intensifying screen
- mode pattern
- chronophotography
- filters
- multilongitudianl-mode laser
- frequency summing
- optical deformation
- time-averaged shadow-moire method
- infra-red beam folower