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- Astronomy is the study of the universe beyond the earth's atmosphere.The main branches are astrometry, celestial mechanics, and astrophysics. 天文学是地球大气层之上宇宙的学问;其主要分支是天体测量;天体力学和天体物理.
- Celestial mechanics enables astronomers to calculate the positions of the planets at any time in the post or future and to predict the movements of comets. 天体力学使文学家能计算出行星在过去或将来任何时候的位置，并能预报彗星的运行位置。
- A body subjected to gravitational attraction by the Earth and orbiting the latter according to the law of celestial mechanics must be termed a "celestial body". 一个受到地球引力吸引，并按照天体力学定律环绕地球运转的物体必须叫做“天体”。
- Hamilton, a professor at the University of Maryland, received the 1999 Urey Prize of the American Astronomical Society for his studies of the celestial mechanics of dust. 汉密尔顿现在是马里兰大学教授，因为研究尘埃的天体力学，获得美国天文学会1999年的尤瑞奖。
- The secular influence of solar mass-loss on the orbital elements of meteor steams is examined by using the method of celestial mechanics of variable mass in this paper. 将作者在变质量天体力学所得理论结果应用于太阳质量损失对流星群轨道根数变化的长期效应上。
- qualitative theory in celestial mechanics 天体力学定性理论
- post-Newtonian celestial mechanics 后牛顿天体力学
- An Elementary Survey Of Celestial Mechanics 天体力学综述
- Some Hotspots of Celestial Mechanics 天体力学的几个热点问题
- Qualitative Theory of Celestial Mechanics 天体力学定性理论
- Astrodynamics and Celestial Mechanics 天文动力学和天体力学
- numerical method of celestial mechanics 天体力学数值方法
- Relativity in Celestial Mechanics and Astrometry 天力和天测的相对论基础
- Numerical Methods for Celestial Mechanics 天体力学数值方法
- computational celestial mechanics 计算天体力学
- The apparent celestial origin of a meteoric shower. 流星群的辐射点明显的流星雨太空光源
- The sun, moon, stars, etc. are celestial bodies. 太阳、月亮、星星等都是天体。
- He failed in the examination of mechanics. 他没通过力学考试。
- They had no hope of admission to the celestial kingdom. 他们无望进入天国。
- The sun, the stars and the moon are celestial bodies. 太阳，星星和月亮都是天体。
