main sequence star 中文意思是什麼
main sequence star
解釋
主序星-
As the main-sequence mass of the star increases, the mass of the final remnant left as a white-dwarf star also increases.
在恆星在主序的質量增加時,作為白矮星留下來的最終殘骸的質量也增加。 -
The star used to be like the sun, a “ main sequence ” star that burns hydrogen by nuclear fusion, producing helium
該恆星和太陽一樣是一顆主星序恆星,氫元素通過核裂變生成氦元素。 -
When a massive proto-star approaches the main sequence, its surface temperature is low and it can not ionize the ambient gas.
當一個大質量原星接近主星序時,它的表面溫度是低的,因而不能電離周圍的氣體。 -
When a star is at the main sequence stage, its interior continuously fuses four hydrogen nuclei i. e. protons into one helium nucleus
在主序星階段,恆星內部不斷把四粒氫原子核即質子融合成一顆氦原子核。 -
We will discuss what will happen to a main sequence star with a mass over about 8 solar masses
假若恆星的質量超過八個太陽質量的話,它會怎樣演化呢? -
Post - main - sequence star
主序后星 -
Particles in the star move around rapidly due to high temperature creating a high gas pressure. together with the radiation pressure generated by the photons, they exert pressure pushing outward to balance gravity s inward pull. then, a star becomes stable and now enters the main sequence phase
恆星內部所產生的高溫,會令粒子急劇運動,產生向外的氣體壓力,再加上光子的輻射壓力抵消掉向內的引力,令恆星保持穩定,進入主序星階段。 -
It takes about 0. 1 to 100 million years for the cloud to become a main sequence star
這個收縮過程需要十萬至一億年,才能演化成一顆主序星。 -
A heavy star at the upper end of the main sequence has a rather different later history.
在主序上端的大恆星具有很不相同的晚年史。 -
The main sequence stage lasts for a long time in the life of a star
對于大質量的恆星,由於它們的核反應速率很快,大約 -
After it reaches the main sequence, the star will stay there for millions to billions of years
一般恆星會在主序星階段逗留一百萬至一百億年。 -
For example, light emits from the surface of a typical main sequence star falls mainly in the optical window. that is why we can see our sun in daytime and countless stars at nighttime
例如,大部分主序星表面發射出來的輻射是可見光,因此我們能夠在日間看見太陽,夜間看到漫天星斗。
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