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