后来，他发现了一个太阳黑子群，它存在时间很长，从太阳的西边消失，又在东边出现，最后又回到原来的位置。
Afterwards he found a sunspot group which lived long enough to disappear from view on the western limb of the sun, to reappear on its eastern limb, and finally to regain its old position.
接近太阳表面中心之处，一个黑子群清晰可见。
Close to the centre of the sun, a group of sunspots is visible.
上星期，人们用地面望远镜观测到了这一太阳黑子群。
The monster spot came into view of Earth-bound telescopes last week.
依据对太阳活动的统计研究，简要分析了三个大黑子群活动的差异。
The difference among the three huge sunspot groups are studied briefly based on the statistical study on solar activities.
结果可用于解释：多带耀斑的产生、双拱磁结构和拉长的复杂黑子群上空的磁场结构。
The results are used to interpret the producing of multiple-ribbon flares, two-arch magnetic structures and the structures of the magnetic field above the elongated complicated groups of sunspot.
当太阳黑子磁环从太阳对流层深层上浮到太阳表面时，便形成了一个双极黑子群的活动区。
An active region with a bipolar sunspot is formed when the magnetic flux ring of the sunspot rise to the solar surface from the depth of solar convection zone.
天文学家很快就发现这不是普通的太阳黑子，而是个巨型黑子群，其中有些黑子比地球还要大的多。
Astronomers soon realized this is not your average sunspot-it's a giant cluster of sunspots, several of which are larger than our entire planet.
这个黑子群的磁场活动首先被卫星发现，编号为活跃区1339 (AR 1339)。当时它刚开始沿太阳西北边缘移动。
Dubbed Active Region 1339, the cluster of magnetic activity was first spotted by satellites as it started making its way around the sun's northwestern edge.
这个黑子群的磁场活动首先被卫星发现，编号为活跃区1339 (AR 1339)。当时它刚开始沿太阳西北边缘移动。
Dubbed Active Region 1339, the cluster of magnetic activity was first spotted by satellites as it started making its way around the sun's northwestern edge.
应用推荐