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