You've got negative charge in motion, and it's in a circular orbit.
负电荷在运动，它们处在一个环形的轨道中。
Based on the orbit equation of particle motion in central force field, the stable property and close property of orbit were discussed.
在中心势场中粒子运动轨道方程的基础上，进一步讨论粒子轨道的闭合性、稳定性。
This paper presents some equations of adjoint motion for spacecrafts moving in elliptic orbit of different plane.
本文给出在非共面椭圆轨道上运行的航天器的伴随运动方程。
An optimal trajectory generation strategy based on way-points is presented to solve the fixed-time state transition for spacecraft relative motion in a circular orbit.
针对圆(近圆)轨道航天器相对运动的固定时间状态转移问题，提出了一种基于导航点的多脉冲优化轨迹生成策略。
The motion orbit of cutting-tool is simulated dynamically on the computer screen, with test and verification of NC program achieved in the non-real cutting process.
仿真系统模拟数担数控机床硬件插补原理，在计算机上动态地模拟出刀具运动轨迹，实现非实际切削过程中的数控代码验证。
In order to ensure structural reliability of deployable structures in orbit, the hybrid analysis of its mechanism motion and flexible deformation is required.
为了保证空间可展结构可靠运行，在展开过程分析中需同时考虑机构运动和弹性变形。
The orbit variation in one day under the nonspherical perturbation is shown and the motion of the orbit plane is computed.
计算给出了一日内的卫星轨道，反映了在地球非球形摄动下轨道的变化情况，且对轨道面的进动进行了计算。
A main aim of the lunar motion theory in ancient China is to calculate the longitude of the Moon at the lunar orbit at any given time.
计算月亮的白道经度，是中国古代数理天文学之月亮运动理论的核心内容之一。
Applying the results obtained in this paper to the motion of comets, discuss the nongravitational effect on the orbit of some comets.
文中还将研究结果应用到彗星运动上 ，讨论彗星轨道中非引力效应。
Chaotic attitude motion of a magnetic rigid spacecraft in a circular orbit of the earth is treated.
研究在地球万有引力场和磁场中的磁性刚体航天器在圆轨道上的混沌姿态运动。
Chaotic attitude motion of a magnetic rigid spacecraft in a circular orbit of the earth is treated.
研究在地球万有引力场和磁场中的磁性刚体航天器在圆轨道上的混沌姿态运动。
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