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