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- The astronomer Kepler, whose work on the planetary motions is now a classic, is reported to have said of his book that "it may wait a century for a reader, as God has waited 6000 years for an observer. 但据说，当时他对该书曾讲过这样一句话，“这本书可能要等上一个世纪才有一个读者，就像上帝等了六千年才有了一个天文观察者一样。”
- A simple disposal of several physical equations of the planetary motion 行星运动物理问题的简单处理
- Kepler's Laws of planetary motion. 开普勒行星定律。
- Measured the planetary tilt in degrees. 测量地球倾斜的角度
- Applications to physics: the oscillator and planetary motion. 物理上的应用：谐振和行星运动。
- German astronomer who first stated laws of planetary motion (1571-1630). 第一个阐述行星运动定律的德国天文学家（1517－1630）。
- the planetary motion 行星运动
- Can the Planetary Fortress lift off? 行星要塞能飞行吗?
- He most certainly deserves credit as a pioneer, with Le Verrier, of applying perturbation theory to planetary motion. 他与勒威耶都是应用微扰理论解决行星运动问题的开拓者，毫无疑问。
- Brahe:Danish astronomer whose accurate astronomical observations formed the basis for Johannes Kepler's laws of planetary motion. 布雷赫:丹麦天文学家,其精确观测构成了关于天体运动的约翰尼斯·克普勒定律的基
- These bands must introduce longitudinal asymmetry in the planetary albedo. 这些云带必定引起行星反照率的经向不对称性。
- This situation is reminiscent of the (incorrect) Ptolemaic theory of planetary motion first developed by the ancient Greeks. 这种状况不禁让人想起错误的托勒密行星运动理论。
- In the Ptolemaic system of planetary motion the earth is fixed as the center of the universe with the sun and moon and planets revolving around it. 在托勒密的行星运动体系里，地球是固定的，是宇宙的中心，太阳、月亮和其他行星都绕着地球转。
- The results show that the secondary flow appears in the flow of the power-law fluid in annulus with the inner cylinder executing a planetary motion. 结果表明:幂律流体在内管做行星运动的环空中流动时出现二次流,且二次流分布与环空内管公转、自转速度的方向和大小以及环空偏心距有关。
- The fourth column shows the planetary rulership of the triplicities. 第四列的表格代表了三分星座的主宰星。
- It is put forward that new viewpoints in theories and methods of studying planetary motion, G-variate reguarlity, global shape, global motion, and so on. 从而对诸如天体运行、G变规律、地球形状与运动等方面在理论和研究方法上提出了全新的观点。
- These additional possibilities modify the gravitational force in a small but nonnegligible way, yielding potentially observable corrections to planetary motion. 这些额外的可能性，会以一种微小但不可忽略的方式修正重力，造成的结果有可能可以在行星运动中观测到。
- SAF-t is the principal axis of the hinge-cylinder operation gear planetary motion so that the tool axis exesting self-rotating up to 20 percent, and the revolution. 折刀的主轴是靠折页滚筒操作齿轮做行星运动，这样折刀轴既有自转，又有公转。
- They work alone or in groups. They can work on one individual at a time or for with the planetary grid. 他们单独工作或成组工作。在某个时刻他们能影响一个人或者有益于地球网格。
- Travel to the planetary systems of other stars is a much more formidable undertaking. 要航行到其他恒星的行星系中去是件极难实现的事。
