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