例句與造句

1. Class M stars are by far the most common.
2. About 76 % of the main-sequence stars in the solar neighborhood are class M stars.
3. :Class M stars are red, and by numbers they would be almost all dwarfs, with just a few giants.
4. Also, the article doesn't state what percentage of class M stars are red dwarfs, so there were two uncertainties.
5. The spectrum of a class M star contains lines from oxide molecules, especially visible and all neutral metals, but absorption lines of hydrogen are usually absent.
6. It's difficult to find class m star in a sentence. 用class m star造句挺難的
7. :: : : So I guess the question is : Is the solar neighborhood representative of the universe in regard to the proportion of class M stars?
8. TiO bands can be strong in class M stars, usually dominating their visible spectrum by about M5 . vanadium ( II ) oxide bands become present by late M.
9. The vast majority of stars are found along the main sequence with blue Class 0 stars found at the top left of the chart while red Class M stars fall to the bottom right.
10. That tally only includes stars of absolute magnitude 16 or brighter; the proportion of Class M stars would rise further if dimmer stars were included . talk ) 05 : 06, 22 January 2010 ( UTC)
11. In total, several hundred low mass objects are thought to be cluster members, including around a hundred spectroscopically measured class M stars, around 40 K class stars, and a handful of G and F class objects.
12. So : can anyone answer this regarding only red dwarfs, and in the context of the universe ( instead of class M stars in the solar neighborhood ) ?  Preceding talk ) 05 : 34, 22 January 2010 ( UTC)
13. Although most class M stars are red dwarfs, most giants and some supergiants such as VY Canis Majoris, Antares and Betelgeuse are also class M . Furthermore, the hotter brown dwarfs are late class M . This is usually in the range of M6.5 to M9.5.
14. The original definition of an S star was that the ZrO bands should be easily detectable on low dispersion photographic spectral plates, but more modern spectra allow identification of many stars with much weaker ZrO . MS stars, intermediate with normal class M stars, have barely detectable ZrO but otherwise normal class M spectra.
15. In the current system of stellar classification, stars are grouped according to temperature, with the massive, very young and energetic Class M stars exhibit temperatures less than 3, 500 K . Because luminosity is proportional to temperature to the fourth power, the large variation in stellar temperatures produces an even vaster variation in stellar luminosity.