例句與造句

1. A galaxy having an active nucleus is called an active galaxy.
2. However, optical observations show no signs of an active nucleus, which may just mean it is heavily obscured.
3. Isolation of R gives the distance from the origin ( localized unpaired electron ) to the spin active nucleus.
4. NGC 1300 is not known to have an active nucleus, indicating that its central black hole is not accreting matter.
5. An active nucleus has a spectrum with a continuum that cannot be explained by radiation from one or more stellar ( or blackbody ) objects.
6. It's difficult to find active nucleus in a sentence. 用active nucleus造句挺難的
7. Among astronomers, the accepted explanation for the active nucleus in NGC 5548 is the accretion of matter onto a supermassive black hole ( SMBH ) at the core.
8. This reports the finding of a ionization echo excited by a mildly active nucleus that has declined by ~ 3 orders of magnitude over the past 20, 000-200, 000 years.
9. This comet was chosen for investigation because it is relatively inactive _ most of the volatile materials in its nucleus having been exhausted . ( An active nucleus, spewing out gas and dust, would be more dangerous to approach .)
10. Broadly speaking, if a comet has a large and active nucleus, will pass close to the Sun, and is not obscured by the Sun as seen from the Earth when at its brightest, it has a chance of becoming a great comet.
11. In the case of sources with lobes, the dynamics are fairly simple : The only unambiguously supersonically expanding system known consists of the inner lobes of the low-power radio galaxy Centaurus A which are probably a result of a comparatively recent outburst of the active nucleus.