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