星系

The decrease in food production meant that the entire system, which depended on Goral for food stock, had to be supplied by merchants or face starvation.

粮食产量骤减，这意味着整个依靠戈拉尔来提供粮食的星系，不得不依靠粮食商人，否则就会面临严重的饥荒。

The X-ray images and spectra obtained using Chandra's High Energy Transmission Grating Spectrometer show that a strong wind is being driven away from the center of NGC 1068 at a rate of about a million miles per hour.

X -射线图像和光谱获得使用钱德拉的高能透射光栅光谱仪显示，强风被赶出1068星系中心的距离大约在1万英里每小时的速度。

TheX-ray images and spectra obtained using Chandra's High EnergyTransmission Grating Spectrometer show that a strong wind is beingdriven away from the center of NGC 1068 at a rate of about a millionmiles per hour.

X -射线图像和光谱获得使用钱德拉的高能透射光栅光谱仪显示，强风被赶出1068星系中心的距离大约在1万英里每小时的速度。

To understand galaxy formation we would like to think of gravitation.

为了理解星系的形成，我们总要想到万有引力。

The existence of dark matter is inferred from the behavior of faraway galaxies, which move in ways that can only be explained by a gravitational pull caused by more mass than can be seen.

据物理学家介绍，目前他们只能对宇宙中大约5%的暗物质进行探测。物理学家是根据遥远星系的行为探知暗物质存在的。

Active Galactic Nuclei is a modern astrophysics research Heat Gate issue, in spite of 40 years of observation and theoretical study But how the gravitational potential energy of the radiation into the mysteries answered.

帮忙将下面这一段话翻释为英文，辛苦了，翻译得好最后有悬赏活动星系核是近代天体物理学研究的热门课题，尽管经过40多年的观测和理论研究，但引力势能如何转化为辐射能这一迷团尚未解开。

In treating this kind of gaseous motion, the gravitational potential is primarily determined by the stars or central object.

旋涡星系盘和原始太阳星云盘都是由两种成份组成：气体和恒星。

The idea is that the matter we say does not have enough gravitational pull to keep galaxies together.

这个观点是我们说的这个物质没有足够的地心引力去保证星系在一起。

The idea is that the matter we see does not have enough gravitational pull to keep galaxies together.

这个理论是我们看到的物质没有足够的重力推动星系聚合。

2 The idea is that the matter we say does not have enough gravitational pull to keep galaxies together.

这种概念源自我们所说的物质没有足够的引力把恒星束缚在星系内部。

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。