星系

This typically happens when two galaxies interact and gravitationally tug at each other.

这种情况经常发生在两星系相互用引力牵扯对方的时候。

Spiral galaxies are considered to be gravitationally bound configurations of stars.

旋涡星系被认为是由恒星组成的引力束缚系统。

A galaxy is a system of many stars and gas that is gravitationally bound in a dark matter halo.

星系是许多恒星和气体构成的系统，在一个暗晕里面通过引力束缚在一起。

Andromeda is so close, in fact, that it is gravitationally bound to the Milky Way, and is one of the only galaxies in the sky that is moving toward us.

实际上，她离我们如此的近，以至于它的引力已经影响到银河系，它是天际中唯一朝向我们移动的星系。

Most galaxies are found in gravitationally bound groups, called clusters.

大多数星系发现于各个靠引力维系的集团内，也成为星系团。

In this scenario the cluster stars drift off as other stars in the galaxy gravitationally tug on them.

在星系其他恒星的重力吸引下，疏散星团会逐渐散开，被其他恒星吞噬。

We define a first galaxy as one comprised of the very first system of stars to be gravitationally bound in a dark matter halo.

我们这样来定义第一代星系，即由非常早期的恒星系统在暗晕中被引力束缚在一起。

Another is if two galaxies are merging--or at least affecting each other gravitationally because of their close proximity.

目前一般认为，星群爆发能够反过来对所在星系产生作用。

Of stars or galaxies [5^AlEksiz] that appear close together in the sky and are gravitationally [9^rAvi5teiFEnEli] associated.

星团指的是天空中看起来较为接近，被重力作用维系在一起的星球或星系的集合。

In the September Physical Review D , he explains that in certain circumstances Ho?ava's graviton fluctuates as it interacts with normal matter, making gravity pull a bit more strongly than expected in general relativity. The effect could make galaxies appear to contain more matter than can be seen.

在9月份的《物理评论D》上，他解释说在特定环境中，赫拉瓦引力子受正常物质的作用产生波动，使得引力比广义相对论的预测值高，从而制造假象，似乎星系中除观测到的物质之外，还包含一些"暗物质"。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。