Newton for years had been curious about the cause of the orbital motion of the moon and planets.
多年来，牛顿一直对月球和行星绕轨道运行的原因感到好奇。
For years Newton had been curious about the cause of the orbital motion of the moon and planets.
多年来，牛顿一直对月球和行星轨道运动的成因好奇。
But Newton for years had been curious about the cause of the orbital motion of the moon and planets.
但多年来牛顿一直对月球和行星绕轨道运行的起因好奇不已。
The equation of satellite orbital motion was derived in the conventional terrestrial coordinate system.
推导了协议地球坐标系下的卫星运动方程。
Spin-orbit coupling is the interaction between the spin magnetic moment of an electron and magnetic field generated by its orbital motion.
自旋-轨道耦合是电子的自旋磁矩和由轨道运动产生的磁场之间的相互作用。
Cometary accurate orbital motion is a complex and difficult problem. Its remarkable characteristic is the presence of the non-gravitational effect.
彗星的准确轨道运动的确定是个复杂而困难的问题，其显著特点是存在非引力效应。
In our work, the effect of Coulumb interaction between electrons, the effect of quantization of orbital motion, and the influence of alternating electric field have been taken into account.
在我们的结果中，特别考虑了电子间库仑作用的集体效应、磁场引起的电子轨道运动量子化效应及交变电场的影响。
This paper reveals the dynamical characteristics of relative orbital motion of formation flight and presents the principles and method for the orbit configuration design of formation flight.
本文研究了编队飞行卫星群的轨道动力学特性，提出了编队飞行的轨道构形设计的原则和方法。
Orbital motion about a point, especially as distinguished from axial rotation.
旋转，绕转：围绕一个点的轨道运动，尤指区别于绕轴旋转的。
Orbital motion about a point, especially as distinguished from axial rotation.
旋转，绕转：围绕一个点的轨道运动，尤指区别于绕轴旋转的。
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