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