天体的

In this paper, the changes of terminology, concepts and definitions are described. The reasons for the changes, the influences on classical astrometry are discussed.

据此，对天体测量学的术语、概念和定义的变化作了描述，并讨论了变化的原因和对天体测量学的影响。

The time variation of the cosmic ray flux is one of crucial problems in the field of cosmic ray physics, solar geophysics and astrophysics, etc.

宇宙线强度随时间的变化、时间变化的起源和与天体物理因素的联系是宇宙线物理、地球物理和天体物理学科中最复杂的问题之一，具有重要的物理意义。

We are taking photometric measurements of all stars in the sky in several filters measurements repeated frequently to allow detection of variable stars

我们正在用光度测量法测量天空中的所有天体，使用几个重复测量的过滤器以检测变化的天体。

Hence, the study on planetary volcanism is a key part of comparative planetology. Study the volcanism of celestial bodies of Solar system could provide significant knowledge for the understanding of the formation and evolution of the planets, deep and surface processes, metallogenesis, and initiation of life.

对太阳系天体火山作用的对比研究能够提供认识太阳系和行星演化、天体深部和浅部地质作用过程、矿产资源形成以及生命的起源和演化等重要信息，是比较行星学的重要组成部分。

I have observed from cities for 30 years," he writes. Using a refractor "with a 5-inch f/5 Jaegers objective, I have observed 350 of 600 deep-sky objects that I know are possible, most of them many times.

我已经在城市里观测天体30年了，"他写道，"使用一台5英寸的折射镜，我已观测了我所知的500个深空天体中的350个，其中大多数都不只一次。

Using a refractor "with a 5-inch f/5 Jaegers objective, I have observed 350 of 600 deep-sky objects that I know are possible, most of them many times."

我已经在城市里观测天体30年了，"他写道，"使用一台5英寸的折射镜，我已观测了我所知的500个深空天体中的350个，其中大多数都不只一次。

Five locations in space relative to two bodies where a third, less massive body can maintain a stable orbit around a common center of mass

质量较小的第三天体在两天体之间可能保有围绕共同质心的稳定轨道的点之一，这样的点共有五个

I have observed from cities for 30 years," he writes. Using a refractor "with a 5-inch f/5 Jaegers objective, I have observed 350 of 600 deep-sky objects that I know are possible, most of them many times.

我已经在城市里观测天体30年了，&他写道，&使用一台5英寸的折射镜，我已观测了我所知的500个深空天体中的350个，其中大多数都不只一次。

Using a refractor "with a 5-inch f/5 Jaegers objective, I have observed 350 of 600 deep-sky objects that I know are possible, most of them many times."

我已经在城市里观测天体30年了，&他写道，&使用一台5英寸的折射镜，我已观测了我所知的500个深空天体中的350个，其中大多数都不只一次。

Also included in the book are discussions of non-European celestial maps and chapters on early American influences and celestial map-collecting.

书中还包括讨论的非欧洲天体图和美国早期的天体图的影响和收集情况

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。