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