天体的

The familiar eyeball shape of the Helix Nebula shows only two dimensions of this complex celestial body.

熟悉的眼球形状的螺旋星云显示只有两个层面对这一复杂的天体。

With the celestial globe, people can figure out the star atlas even during daytime or on a cloudy night.

后来，唐朝的一行和梁令瓒、宋代的苏颂和韩公廉等人，把天体仪和自动报时装置结合起来，发展成为世界上最早的天文钟。

The great English scientist Newton(1643~1727) published the book Mathematical Principles of Natural Philosophy in 1687. It sums up all his studies and brings forward the three fundamental laws of mechanics, the law of universal gravitation and the laws at celestial mechanics.

英国伟大科学家牛顿(1643~1727)在1687年版的《自然哲学的数学原理》一书总其大成，提出动力学的三个基本定律，万有引力定律，天体力学等。

Birkhoff, Siegel, Kolmogorov, Arnold, Moser, Herman, and many others investigated the ideas of stability and found complicated behavior for systems arising in celestial mechanics and other such physical systems, which could be described by what are called Hamiltonian differential equations .

Birkhoff ， Siegel ， Kolmogorov ， Arnold ， Moser ， Herman 和其他很多研究者研究稳定性的思想，发现了具有复杂行为的系统出现在天体力学和其它相似的物理系统中，这些都可以用称为 Hamilton 微分方程来描述。

The apparent surface of the imaginary sphere on which celestial bodies appear to be projected.

一个虚构的球体的看得见的表面，其它天体好像是投影在它上面。

Also have Sirius B, centering at around Sirius A, but due to small size, can not be seen by the naked eye until 1862, American astronomer Alvin Clark with the largest at that time, the latest celestial telescope, they discovered its existence.

另外还有天狼星 B ，围绕在天狼星 A 的周围，但因体积小，无法以肉眼看到，一直到 1862 年，美国天文学家艾尔文·克拉克用当时最大、最新的天体望远镜，才发现了它的存在。

Well, in fact all celestial bodies in the universe do not remain in the one position, they are moving.

事实上，宇宙中的所有天体都不是静止不动的，他们都是运动的。

A coronagraph uses an occulting disk to create an artificial eclipse, revealing the corona and objects hidden in the solar glare. C2's field of view extends from about 2 to 6 solar radii, while C3's runs from about 4 to 32 solar radii.

日冕仪利用一个遮光板产生人造日食，使得淹没在太阳强光中的日冕和其他天体显现出来）。C2照相机的视野范围在2到6个太阳半径之间，C3的视野在4到32太阳半径间。

The method may be applied to cylindrically or spherically symmetric and optically thin ...

可以把这种方法应用到在等离子体物理和天体物理中经常遇到的柱对称或球对称的光学薄的等离子体上。

The physical solutions of the Dirac equation with non-zero rest mass are found outside the event horizon of general spherically symmetric and charged evaporating black hole.

引 言自从Balbinot研究了考虑到反作用时的蒸发黑洞的Hawking辐射以来，这一研究领域引起了国内外理论天体物理学家的极大兴趣[1 5]。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。