太阳

Instead, the apparent backwards or retrograde motion with respect to the background stars is a reflection of the motion of the Earth itself.

火星逆行能在地球每次赶上和超越火星时看到，因为地球离太阳比较近，在轨道上运行的速率比火星快。

Aristachus of Samos explained the apparent motion of the stars and planets by proposing that the earth turns on its own axis and also travels around the sun.

而萨摩斯岛的阿里斯塔克是这样解释恒星和行星的视运动的："地球在自转，同时绕着太阳转"。

In addition to the sun, other stars may also have their own planets, broadly speaking, any movement around the star, the quality does not meet the thermonuclear reaction can produce the quality of the main sequence stars the approximate lower limit of spherical objects can be called planets .

除太阳外，其他恒星也可能有自己的行星，广义上说，凡是环绕恒星运动的，质量未达到能产生热核反应的主序星质量下限的近似球形的天体都可称为行星。

A: The stick of carbon is often used in an electric arc lamp.

太阳看起来在天空以弧线运行。

Man mastered darkness first with dim lights and later with brighter and brighter lamps, until he can now make for himself so dazzling a light with an arc lamp that, like the sun, it is too strong for his naked eyes.

人们首先用微弱的光线战胜黑暗，然后用越来越亮的灯，一直到现在使人们自己都觉得眼花缭乱的弧光灯，这种灯像太阳一样，对肉眼来说太刺眼了。

The paper specially gives a particular description of the V-A characteristic of 20kW xenon short arc lamp ,the performance test of trigger,and the electrical performance and stability of switching DC power supply.

文章介绍了 KM6太阳模拟器氙灯单元试验的全部过程，对短弧氙灯的伏安特性进行了研究。

This paper lays stress on the establishment of the optical system model of solar simulator and xenon short arc lamp model, especially the later.

文章着重介绍了太阳模拟器光学系统及氙灯的建模，尤其对短弧氙灯建模做了详细阐述，它是根据短弧氙灯的亮度分布图采用多个体光源嵌套的形式模拟氙灯，用角度切址文件和光谱分布数据定义短弧氙灯的角度分布和光谱分布。

Dial back the clock nearly 4 billion years, to a time called the Archean, and the sun would appear about 30% dimmer than it is now.

把时钟拨回到将近四十亿年前，回到一个叫做"太古代"的时期，当时的太阳光线看起来比现在要弱大约30%。

At the Arctic Circle, the sun cannot be seen above the horizon in December.

北极圈在12月份，在地平地线之上是看不到太阳的。

For example, Ariana is remembering the prophecy that the moon will turn to blood and also that various things will happen with the sun.

例如，Ariana回忆起预言月亮将变成血色而且除此之外各种各样的事情将随太阳一起发生。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。