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