conservative
发表于 2025-3-26 21:48:07
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色情
发表于 2025-3-27 04:14:55
Detlef Schmiechen-Ackermanns the dynamics of mass points and light rays. In modern theoretical physics however, not particles but . are the elements of nature. In this chapter we shall turn our attention to fields.We shall not build a field theory systematically, but introduce some basic notions that are essential for the fur
ARCH
发表于 2025-3-27 08:23:43
Winson Chus the dynamics of mass points and light rays. In modern theoretical physics however, not particles but . are the elements of nature. In this chapter we shall turn our attention to fields.We shall not build a field theory systematically, but introduce some basic notions that are essential for the fur
努力赶上
发表于 2025-3-27 10:25:48
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frivolous
发表于 2025-3-27 17:23:24
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habitat
发表于 2025-3-27 20:39:06
Claus-Christian W. Szejnmannmical composition of the lunar globe — a difficult subject to approach with any confidence at a distance, when most of its discussion has to rest on indirect arguments. Yet such arguments should enable us already at this stage to draw certain probable conclusions which should facilitate our discussi
Debility
发表于 2025-3-28 01:41:43
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多样
发表于 2025-3-28 05:04:28
Oliver Wernerountless generations. The reasons, originally, have been utilitarian rather than scientific; as the apparent motion of the Moon was so intimately connected with the calendar and time keeping for agricultural and cultic purposes. Until the advent of modern astronomy in relatively recent times, the ob
superfluous
发表于 2025-3-28 07:25:05
y. This motion affects, of course, vitally most observational manifestations of our satellite; and the most elementary aspect of these are the conditions of illumination of the Moon by the Sun and the Earth — i.e., the . of the Moon — which we shall now proceed to describe.
优雅
发表于 2025-3-28 14:06:56
Andreas Strippel motion of the Moon in space, and even more that about its center of gravity, are largely controlled by the Earth — with distant, but powerful, cooperation of the Sun. The aim of the present section will, however, be to focus specific attention on certain dynamical aspects of the Earth-Moon symbiosi