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