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