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