天文

These images were placed in celestial latitude and longitude coordinate systems that allowed the positions of the stars to be mapped in the sky and formed the backdrop for predictions of the location of the planets and other heavenly bodies throughout the year.

这些图像被放置在天文经度和纬度坐标上允许明星的被映射在天空中并形成了全年的对行星和其他天体的位置预测系统的背景。

By the late 1970s, the PRC had made breakthrough in a number of SLBM-associated technologies, including the lightweight nuclear warhead (600~700kg) developed by 14 Nuclear Institute; the guidance system developed by 717 Shipbuilding Institute; the onboard computer was developed by 771 Space Institute; the solid-propellant rocket motor by 4th Space Academy, the SLBM launch system developed by 701 Shipbuilding Institute, the inertial/celestial/satellite guidance system developed by 707 Shipbuilding Institute.

在1970年，中国在许多SLBM相关技术上获得突破性进展，包括轻型核弹头（600~700公斤）由核工业第十四研究所发展，制导系统由中船重工717研究所发展；舰载计算机由航天771所发展；固体火箭发动机由第四空间研究院发展，发射系统由中船重工701研究所发展，惯性/天文/星形制导系统由中船重工707研究所发展。

This year's autumnal equinox will occur at 5:19 am Wednesday, according to the latest published astronomical almanac of China.

根据最新出版的《中国天文年历》，今年秋分准确时间是9月23日5时19分。

By a easy click you can adjust your clock be a atomic clock synchronized with the astronomical time.

由一个简单按一下您可以调整时钟是一个原子钟同步进行的天文时间。

Know astronomical unit and light year are used for expressing the distance between celestial bodies.

知道天文单位和光年是用来丈量天体之间距离的单位。

Modern astronomers has proved to be the ancient Maya predicted in 2012 on 21 December, the Earth, the Sun and the Galactic Centre will precisely in a straight line, the astronomical events only every other year 25800 occurs only once, no one knows this unusual arrangement on earth can, but the Mayan people know this is terrible.

现代天文学家已证实古玛雅人所预言的在2012年12月21日，地球，太阳和银河中心将精确地排列成一条直线，这个天文现象只有每隔25800年才会发生一次，没人知道这种非同寻常的排列方式对地球会有怎样的影响，但玛雅人知道这是可怕的。

It follows a rather unusual orbit, heliocentric instead of geocentric , trailing and drifting away from Earth's orbit at approximately 0.1 astronomical unit per year (a so-called "earth-trailing" orbit).

因此不寻常的轨道，日心说代替地心，尾随和漂流约0.1每年天文单位远离地球的轨道上（所谓的&地球尾随&轨道）。

The magnitude, abbreviated as mag , is an astronomical unit describing the brightness of a celestial object.

星等 是描述天体光度的天文单位。

Mean Distance to Sun: The height of the pyramid times 10^9 represents the mean radius of the earth's orbit around the sun, or Astronomical Unit.

太阳的平均距离为：金字塔的高度乘以10 ^ 9代表了地球轨道绕太阳，或天文单位平均半径。

It is the speed of almost 50 million kilometers per hour, ride on the sun, where approximately three hours – that is the sun about 1.5 billion kilometers from Earth, that is the legendary one astronomical unit.

它的速度差不多每小时5000万公里，骑到太阳那里大约要3个小时——也就是说太阳离地球大约1.5亿千米，即传说中的一个天文单位。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。