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