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