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