centre of mass

1. Technically, the Earth, sun and all of the other the planets are orbiting around the centre of mass of the solar system, not specifically the sun.
   严格意义上讲，地球、太阳和所有其他行星都是围绕太阳系质心运转的，而不是专门绕着太阳转的。
2. According to theorem of motion of centre of mass and theorem of moment of momentum about centre of mass, we derive the theorem of moment of momentum about instantaneous center of rotation.
   从质心运动定理和相对质心的动量矩定理出发，导出了相对瞬心的动量矩定理。
3. He identifies himself with its centre of gravity, its mass, its weight.
   他把自己与形体的重心、质量、重量联系在一起。
4. They are polygons, specified by the coordinates of a centre of mass and their vertices.
   它们均由多边形表示，并给定其重心和各顶点的坐标。
5. As second paper concerning application of computer in physics, two programs of demonstration for mechanical process are put forward: ( 1) elastic collision of two small ball: ( 2) movement of centre of mass of a rigid body.
   作为计算机在物理教学中的应用系列论文之二，本文向读者介绍了两个力学过程的演示程序：（1）两小球的弹性碰撞；（2）刚体的质心运动。
6. The paper shows that Technology the structure prinicples of the Chinese regular script fit the principles of mechanics, after the equilibrium analysis, steadily analysis, the centre of mass analysis, the moment of force analysis and moment of inertia analysis to Chinese regular script structure.
   通过对楷书结构的平衡分析、稳定分析、质心分析、力矩分析和转动惯量分析，从而说明这与楷书间架结构的原则是一致的。
7. The torque of the solar gravitation affecting the earth-moon system, about the centre of mass of the system is deduced, and the change of the angular momentum of the system produced thereby, the method of verification this theory is expounded.
   导出了地-月系统受到的太阳引力对其质心的引力矩，讨论了由引力矩引起的地-月系统角动量的变化，提出了对理论所预期的变化的观测验证方法。
8. The definition of Centre of Mass and NMI feature is proposed and the principle and methods of Threshold calculation, Image segmentation, Target recognition and tracking are presented.
   文章给出了运用连通线多级切割方法实现阈值求取、图像分割、目标识别与跟踪的技术技巧。
9. The Definition of The Centre of Gravity The Relation Between The Centre of Gravity and The Centre of Mass
   重心的定义与质心的关系
10. Based on the thought of changing centre of mass, new pattern Lunar Rover with Center of Mass Varied is put forward.
    基于变质心想法，提出了新型变质心月球车构想。
11. The centre of mass of a tethered satellite system is not the motion centre of the system.
    讨论了稳定状态下绳系系统运动中心及相关的力学与应用问题。
12. A Research On The Motion Velocity In The Centre Of Mass For Cooper Pairs
    Cooper对质心定向运动速度的研究
13. The digital image processing technique has been developed for measuring of fragment mass and the coordinates of its centre of mass.
    本文提出的数字图象处理技术，可用于测量爆炸金属碎片的质量和碎片质心的空间位置。
14. Examination of filmed sequences of turning fish shows that the C-type fast-start process includes three stages, distinguished by different movements of the centre of mass and motions of the caudal fin.
    仔细分析运动图像后，根据质心和尾鳍的运动，发现C形起动过程大体可以分解为三个阶段。
15. In this paper, the influences of the location of mass centre on the moving stability of a motorcycle has been studied by way of establishing a mechanical model, and further, a general principle has been proposed to locate the mass centre in design of motorcycles.
    本文通过建立摩托车动态力学模型，分析了质心位置对车辆稳定性的影响，提出了质心位置设计的一般原则。
16. In routine production, the centre of mass of AOD furnace moves upwards due to the thinning of the refractory lining and the piling of steel-making slag on the rim of the top of AOD furnace.
    AOD炉在生产中，由于耐火材料的减薄和炉口钢渣堆积，造成炉体质心上移。
17. The law of energy in the noninertial reference frame of centre of mass
    在非惯性质心参考系中的能量规律
18. The Proving of the formula of the centre of mass to uniform plane slice
    均匀平面薄片重心公式的推导
19. Every society has a centre. In the religious community, the centre of it was composed by religious beliefs and rituals. In modern society, the religious is losing its status, the mass media, especially the TV media, has become the centre.
    每一个社会都有一个中心，在宗教发达的传统社会，宗教信仰和宗教仪式是社会的中心，而在宗教日益失去地位的现代社会，媒介尤其是电视媒介就成了现代社会的中心。
20. The rotor because of its centre of mass away from its axis caused by an unbalance in the process of high-speed operation will lead to the rotor itself to vibrate. This vibration will accelerate the loss of bearing and lead to shortening of mechanical life.
    转子由于其质心偏离其转轴而导致的不平衡，在高速运转过程中会导致转子本身产生振动，此振动会加速轴承的损耗并导致机械寿命的缩短。
21. The layout of the structure should make the centre of mass and centre of stiffness coincided as far as possible, which can reduce the torsional effect under horizontal load.
    结构平面布置尽量使得质量中心与刚度中心两者重合，减少了水平荷载作用下的扭转效应。
22. As the centre of the whole LBS value chain, they optimize their own platform by integrating a mass of merchants to provide service, thereby attracting consumers and strengthening their stickiness.
    LBS业务提供商的核心能力是整合消费者和线上线下的商家，作为整个LBS价值链条的核心，他通过整合大量商家的服务来完善自己的平台，借此来吸引消费者，增加消费者的黏性。

noun

1. point representing the mean position of the matter in a body

   Synonym:    center of mass