This paper analyses the two body problem of kinematical equation and discusses the elastic collision between two particles in the center of mass system.
用质心坐标系分析了二体问题的运动方程，并用质心系讨论了两个粒子间的弹性碰撞问题。
In center of mass system, solved problem of two body had merits of symmetry form, brief description and high precision.
在质心系中，解决两体问题，具有形式对称，描述简洁，精确度高等优点。
The video concludes 'even though you don't break down the rubber polymers, your body has no problem moving that lump of gum through your digestive system and out the other end within a day or two.
视频最后总结说，“尽管橡胶聚合物没能被分解，但你的身体也完全可以把这一团口香糖清除出消化系统，‘这头进那头出’，只要一两天时间。”
The stability problem of wall rock was prominent, and the factors that affect the wall rock stability including karst, disadvantage structure surface, and the block body combined by the two factors.
乌江构皮滩水电站电站厂房为岩溶地区修建的特大型地下厂房，围岩稳定问题较突出，影响围岩稳定的因素主要有岩溶与不利结构面及其组合的块体等。
Dualism and monism are two major schools of thought that attempt to resolve the mind-body problem.
二元论和一元论是两个主要的尝试解决心身问题的思想流派。
Two- body problem is an important and complex mechanical problem of physics.
两体问题是物理学力学中一个重要而复杂的课题。
Introduce the reference frame and time system used in orbit design particularly. Analyzed the orbit characteristic of two-body problem and launch window.
详细介绍了用于轨道设计的坐标系统和时间系统，分析了二体轨道特性和发射窗口的基本特性。
The matched-asymptotic expansion method is adopted to solve the problem of transmission and reflection of a planar soliton on a two-dimensional floating body.
本文应用渐近匹配方法探讨了孤立波遇到二维柱体时的透射与反射问题。
Finally, the two level differential corrections method was proposed to transform the orbit designed under the circular restricted three-body problem model into the perturbed three-body problem model.
最后使用两层微分修正方法将圆型限制性三体问题模型下设计的轨道转换到受摄三体问题模型下。
A new intelligent planning algorithm which is used for fixed-time, point-to-point, multi-impulse orbital maneuver in the two-body problem is proposed in this paper.
针对二体轨道模型，设计了一种时间固定点对点多冲量轨道机动的智能规划算法。
A new intelligent planning algorithm which is used for fixed-time, point-to-point, multi-impulse orbital maneuver in the two-body problem is proposed in this paper.
针对二体轨道模型，设计了一种时间固定点对点多冲量轨道机动的智能规划算法。
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