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