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