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