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词汇 Moving group
分类 英语词汇 英语翻译词典
释义

Moving group

原声例句
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While many have discussed the social and political implications of these moving groups, we wanted to understand 'How do you build a refugee camp? '

尽管很多人已经讨论过了这些群体的社会和政治影响，我们更想知道，我们如何去建造一个难民营？

开启骑行之旅

You want to move to the front of the group. You want to gently move it across. You want to start gently moving backwards and be slotted back in at the same speed that the group is moving again.

你要走到队伍的最前面。你要轻轻地移过去。你要开始轻轻地向后移动，然后以与队伍相同的速度重新回到队伍中。

中文百科

恒星运动学 Stellar kinematics

（重定向自Moving group）
这4颗速逃星如犁田般的通过密集的星际气体区域产生弓形波和伴随着明亮气体的尾迹。美国国家航空暨太空总署使用哈伯太空望远镜的先进巡天相机在2005年10月至2006年8月发现14颗年轻速逃星。

恒星运动学是研究恒星的运动但无须了解它们如何获得运动原因的学门。这不同于恒星动力学，它必须考虑到引力的效应。一颗恒星相对于太阳的运动，可以提供有用的信息，包括恒星的来源和年龄，以及所绕行星系的结构和演化。

在天文学，已经广泛的接受恒星诞生于被称为恒星育婴室的分子云内。在这样的云气内形成的恒星会组成有数打至数千颗恒星的疏散星团。这种星团会随着时间而溃散，分离的恒星将聚集成为另一种称为星协的恒星集团。如果这些残余的恒星通过一些相干的组合在星系**同漂流，它们就会被称为移动星群。

英语百科

Stellar kinematics 恒星运动学

（重定向自Moving group）
Relation between proper motion and velocity components of an object. At emission, the object was at distance d from the Sun, and moved at angular rate μ radian/s, that is, μ = vt / d with vt = the component of velocity transverse to line of sight from the Sun. (The diagram illustrates an angle μ swept out in unit time at tangential velocity vt.)
Four runaway stars plowing through regions of dense interstellar gas and creating bright bow waves and trailing tails of glowing gas. The stars in these NASA Hubble Space Telescope images are among 14 young runaway stars spotted by the Advanced Camera for Surveys between October 2005 and July 2006
Infrared ESO's VISTA view of a stellar nursery in Monoceros.
Carina OB1, a large OB association.

Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.
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