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