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white dwarfs

美英

na.【天】白矮星
网络白矮体；白矮星区；和中子星

复数：white dwarfs

white dwarfs

white dwarfs

英-汉英-英网络释义

white dwarfs

白矮星

通常称之为白矮星（white dwarfs）的这类高密度恒星，其密度数量级达每立方英■几吨。最特别的例子是几年前由 G．P．克 …

白矮体

所以非常热的恒星表面、超新星的残留物、 白矮体 (white dwarfs)、中子星 (neutron stars)、黑洞 (black holes) 周遭、星系核 …

白矮星区

...少落於图中巨星区(giants) ，由发亮的黄色到红色星球构成。另有少部分落於发亮的超巨星(supergiants) 与暗淡的白矮星区(wh…

和中子星

出版说明 - 免费文档下载 ... (semiconductors) 的传导性能 (white dwarfs) 和中子星 (Fermi level) 或在价带 ...

1

The team studied the spectra , or chemical signatures, of the light from 146 white dwarfs located within a few hundred light-years of Earth .

研究小组研究了光谱，即光线的化学特征。光线来自 146 颗白矮星，它们位于距地球几百光年的范围之内。

2

Our current theoretical models of white dwarfs don't predict this sort of behavior .

目前白矮星的理论模型不能模拟这种行为。

3

White dwarfs compact much of the mass of the stars into a volume the size of the earth .

白矮星将其大部分质量紧密地聚集在相当地球大小的范围内。

6

The gravitational pull of these white dwarfs can attract nearby asteroids that then get pulverized.

引力会推动白矮星靠近小行星然后通过碰撞变成宇宙尘埃。

7

Estimating how long white dwarfs have been cooling can help astronomers learn much about the age of the universe .

估算白矮星冷却的时间长度有助于天文学家深入研究宇宙的年龄。

8

Perhaps , then , white dwarfs are not such a gloomy sight after all.

如此一来，或许白矮星看起来就不会那麽阴郁而了无生趣了。

9

Carbon Earths might be especially prevalent in more bizarre settings , such as the environs of white dwarfs and neutron stars .

碳造地球在更异乎寻常的环境里，如中子星和白矮星周边可能会更常见。

10

The faint blue dots are white dwarfs --stars that have run out of helium and are now just burnt-out and have ever cooler cores .

微弱的蓝点是白矮星 -这已用完了氦，现在只是烧毁和过冷芯星。

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The disks around white dwarfs are much smaller than the disks that give rise to planets around newborn sunlike stars .

与新生类太阳恒星的环绕盘相比，白矮星的环绕盘小很多。

16

Instead, they should eventually just cool to become white dwarfs and then black dwarves.

相对的，它们最终只是会变冷成为白矮星和黑矮星。

17

One class of white dwarfs has almost pure helium atmospheres .

有一类白矮星的大气层几乎完全由纯氦气构成。

18

But not all white dwarfs will spend many millennia cooling their heels .

不过并不是所有的白矮星都有耐性等上无数个千年。

19

But about 20 per cent of white dwarfs are tainted by traces of heavier elements .

但是大约 20%的白矮星都有着重元素污染的痕迹。

20

Teacher : Can you tell us some more about white dwarfs and supernovas ?

老师：你能跟我们说下白矮星和超新星吗？

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