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