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