return-beam tube
相关英语词汇推荐
- hypergiant
- star-formation burst
- halo dwarf
- Desdemona
- Hipparcos Catalogue
- classical quasar
- Foucaultgram
- mesogranulation
- abundance effect
- reddened galaxy
- standard rotational velocity star
- Vilnius color system
- accreting binary
- plateau phase
- proto-galactic object
- heliomagnetosphere
- WR nebula,Wolf-Rayet nebula
- diagonal mirror
- starburst
- finder-circle