以下为句子列表：
英文: Abstract: According to the similar nature of gravitational field and electrostatic field, using analogy method, the stress tensor in gravitational field is obtained from Maxwells stress tensor in electrostatic field, and the universal gravitation inside t
中文: 文摘:根据引力场和静电场的相似性质，通过类比方法由静电场的麦克斯韦应力张量得出了引力场中的应力张量，并用它计算了均质球体内部的万有引力.
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英文: But unlike balls near the earth's surface, CDM particles move in a gravitational field that is not constant.
中文: 不过CDM粒子所经历的重力场和地球表面附近的重力场不同，并不是强度固定的重力场。
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英文: By means of the effective potentials and with the phase-plane method, the properities of the orbits of particles in the gravitational field with mass quadrupole moment are studied.
中文: 摘要通过等效势能图，并利用相平面分析的方法，研究了质量四极矩引力场中粒子轨道的性质。
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英文: Gauss theorem derives from the analysis of gravitational field as well as loop theorem.
中文: 通过对引力场的分析，得到了引力场的高斯定理，讨论了引力场的环路定理。
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英文: Gravitational field is a kind of vector field, and the description of gravitational force by general relativity is very effective.
中文: 引力场是一种矢量场，广义相对论对引力问题的描述是非常有效的。
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