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