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