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。
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 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。
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。
Proton and Anti-Proton Production at Mid-Rapidity from ～(197)Au+～(197)Au Collisions at SNN～(1/2)=200 GeV;
质心系能量200GeV金金碰撞中中心快度区质子和反质子的产额
Change "Wisdom" Enhance the Quality in it s System;
改变“心智” 提高质量体系运行质态
center-of-mass coordinates
(座标原点与质量中心一致的)质量中心坐标系统
The Relation of the Center-of-mass Frame of Reference and Laboratory Reference Frame in Scattering;
散射问题中质心坐标系与实验室坐标系的关系
Using center of gravity method, the system make the precise orientation of laser spot come true.
系统采用质心法,实现了激光光斑中心精确定位。
Empathy:Special concept in the association between psychological counseling and therapy;
同理心:心理咨询与治疗关系中的特质概念
Outline Plan for Establishing Quality Control System of the Testing Center for Medical Devices
医疗器械质量检测中心质量控制系统的设想
Application and Improvement of Mass Centroid and Moment of Inertia Testing System
质量质心转动惯量测试系统的应用与改进
Beijing New Century Certification Center of Quality System (BCC)
北京新世纪质量体系认证中心（BCC）
Beijing 9000 Certification Center for Quality System (CCQS)
北京九千标准质量体系认证中心（CCQS）
China Metallurgical Industry Quality System Certification Center (CMIQC)
中国冶金工业质量体系认证中心（CMIQC）
Guangdong Audit and Certification Center of Quality System (GACC)
广东质量体系认证中心（GACC）
Northeast Audit Centre of Quality System
东北质量体系审核中心（NAC）
Zhejiang Quality Audit Co., Ltd. (ZQAC)
浙江质量体系审核中心（ZQAC）
Shanghai Audit Center of Quality System (SAC)
上海质量体系审核中心（SAC）
China Jiancai Certification Center for Quality System (CJCCC)
中国建材质量体系认证中心(CJCCC)
China Certification Center of Xingqing Quality System (CCXQ)
中国兴轻质量体系认证中心（CCXQ）
China Xinshidai Quality System Certification Body (XQC)
中国新时代质量体系认证中心（XQC）
