| 释义 |
Definition of main sequence in English: main sequencenoun Astronomy A series of types to which most stars belong, represented on a Hertzsprung–Russell diagram as a continuous band extending from the upper left (hot, bright stars) to the lower right (cool, dim stars) as modifier main sequence stars Example sentencesExamples - As you might know hydrogen is very common in our closest star, the Sun, which is a main sequence star.
- Several million years is a long time in comparison to a human life span, but it is short in comparison to the life span of main sequence stars.
- The lower mass limit for a main sequence star is about 0.08 that of our Sun or 80 times the mass of Jupiter.
- The pressure from these nuclear reactions at the star's core balances the pull of gravity, and the star is now called a main sequence star.
- The Sun is an unusually variable star for its position on the main sequence, something that might explain why Intelligent life is found here, and not everywhere.
Definition of main sequence in US English: main sequencenoun Astronomy A series of star types to which most stars belong, represented on a Hertzsprung–Russell diagram as a continuous band extending from the upper left (hot, bright stars) to the lower right (cool, dim stars) as modifier main sequence stars Example sentencesExamples - The pressure from these nuclear reactions at the star's core balances the pull of gravity, and the star is now called a main sequence star.
- The Sun is an unusually variable star for its position on the main sequence, something that might explain why Intelligent life is found here, and not everywhere.
- Several million years is a long time in comparison to a human life span, but it is short in comparison to the life span of main sequence stars.
- As you might know hydrogen is very common in our closest star, the Sun, which is a main sequence star.
- The lower mass limit for a main sequence star is about 0.08 that of our Sun or 80 times the mass of Jupiter.
|