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