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