primary crater
相关英语词汇推荐
- NOAO,National Optical Astronomical
- metallicity gradient
- Geneva color system
- membership of cluster
- dense star cluster
- Flat Spectrum Radio Quasars
- MGS,Mars Global Surveyor
- plane of trajectory orbital
- Great White Spot
- Hubble distance
- subdwarf B star
- starburst galaxies
- terminal-age main sequence(TAMS)
- bipolar planetary nebula
- focal plane spectrometer
- global positioning system
- standard rotational velocity star
- moderate-resolution spectrograph
- initial planet
- Compton loss