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1)  centre-of-mass system
质心系
1.
In this paper, coordinate and momentum eigenstates of two-particle have been introduced in the centre-of-mass system.
导出了双模压缩态与质心系下坐标本征态和动量本征态之间的转换关系,并讨论了双模压缩态的若干性质。
2)  center of mass system
质心系
1.
In center of mass system, solved problem of two body had merits of symmetry form, brief description and high precision.
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。
3)  center-of-mass system
质心系
1.
The characters of kinetic energy s change of collision of two-bodies are investigated in the center-of-mass system from the viewpoint of energy,and the results show that the coefficient of restitution is equal to the square root of the ratio of the relative kinetic energy after the collision to that one before the collision.
从能量的角度出发,考察了在质心坐标系中两体对心碰撞前后体系动能的变化特点,重新讨论了恢复系统的物理意义,结果表明恢复系数等于碰撞之后和之前的质心系中的相对动能之比的平方根。
4)  CMS
质心系统
5)  center-of-mass coordinate system
质心坐标系
6)  Frame of reference of the centre of mass
质心参考系
1.
This article emphasized that the teacher,in the process of teaching, should consciously strengthen the conception of the centre of mass and the application to the Frame of reference of the centre of mass through discussing several examples.
本文通过几个例子的讨论,强调应在教学中有意识地加强对"质心"概念,以及"质心参考系"的应用。
补充资料:质心坐标系
分子式:
CAS号:

性质:质心即质量中心(CM)。反应体系的质心是由散射体系分子的质量mA,mBC及距离决定的,mArA=mBC·rBC。散射过程两者与质心的距离在变化,质心即是动的原点。观测者处在质心位置,交叉分子束向质心而来,离质心而去。这种以质心为原点的描述体系运动的坐标系,称为质心坐标系。

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