质心,centroid
1)centroid[英]['sentr?id][美]['s?ntr??d]质心
1.Arithmetic of welding visual image centroid and its characteristics;焊接视觉图像质心算法及其特性
2.A new technology of weld tracking based on image centroid;基于视觉图像质心的焊缝跟踪新技术
3.Three-dimensional reconstruction of lenticular nucleus and determination of its centroid and volume;人脑豆状核三维重建及其质心、体积的测量
英文短句/例句

1.The Center of Mass,Center of Gravitation and the Center of Inductive Electric Charge;质心、引力作用中心与感应电荷中心
2.Research on the Locating of Image Centroid of Human Body Movements--Locating the Human Body Centroid;人体运动图像质心定位研究——人体质心定位
3.Research on Centroid Moving Mode of Moving Centroid Reentry Vehicles变质心再入飞行器的质心移动方式研究
4.the very core of the subject问题的核心[本质]
5.Quality Control and Training Centre质量控制和训练中心(质控中心)
6.Centre for Heavy Crude and Tar Sands重质原油和沥青砂中心
7.China Architectural Material Quality Approval Center中国建材质量认证中心
8.China Quality Certification Center"中国质量认证中心,"
9.Jiangsu Quality Assurance Center (JQAC)江苏质量保证中心(JQAC)
10.Shenzhen Quality Certification Centre (SQCC)深圳质量认证中心(SQCC)
11.China Certification Center of Light Industry Quality中国轻工质量认证中心
12.unpleasant messy semi-liquid substance恶心人的半流质脏东西
13.Question the author in your mind;在心中要向作者质疑;
14.Doubts about the Frank-Starling Law of Heart质疑Frank-Starling心脏定律
15.center-of-mass coordinates(座标原点与质量中心一致的)质量中心坐标系统
16.the quality of unselfish concern for the welfare of others.关心别人而不关心自己的品质。
17.A center of symmetry must coincide with the center of mass.对称中心必须与质量中心重合。
18.The conscious mind is a vehicle for the expression of the soul in corporeal terms.意识心是心灵表达为有形物质的媒介。
相关短句/例句

center of mass质心
1.A concise calculating approach to center of mass of some abnormal profile thin plates;一类异型匀质平板质心的简明计算方法
2.Comments on "relativistic theorem for the motion of center of mass";评“相对论的质心运动定理”
3.The law of relativistic motion of the center of mass and mass defect;相对论的质心运动定理与质量亏损
3)mass center质心
1.Calculation of height of mass center of sightseeing bus for reducing body height;旅游客车降低车身高度后质心高度的计算
2.Inverse solution for robot PUMA560 kinematics based on coordinate frame attached to mass center;机器人PUMA560的质心坐标系运动学逆解
3.Based on a large seismically isolated structure,the paper analyzed the frequency and mode,the distribution of mass center and the improvement of rubber packing arrangement by SAP2000.针对国内某大型隔震建筑,借助SAP2000建立下部结构—隔震层—上部结构整体系统的空间模型,就隔震结构的振型与频率、质心分布进行了分析和橡胶垫布置的改进计算。
4)centre of mass质心
1.In the center of mass motion theorem of rational mechanics,when the centre of mass is still and "ΣF=0",the location of a certain particle in the centre of mass system,in its final motiom time,is questioned.理论力学质心运动定理中 ,当ΣF =0 ,质心处于静止状态时 ,求解质点系中某一质点在运动末时刻的位置 ,通常要求出质点系的质心在运动始、末位置的坐标值 ,然后由两坐标值相等的条件解出 。
2.By analysing the relation of every particle,centre of mass,internal force and outside force,this paper explains that the quiescent rubforce is the ultimate reason of moving ahead,where the Newton s secend dynamic law is used.首先运用牛顿第二定律对步行起动时组成人体的各个质点和质心的内力和外力的关系进行分析,解释了静摩擦力是人的质心向前平动的根本原因。
3.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。
5)Barycenter质心
1.Research on Metrical Technology of Dynamic Unbalance and Barycenter for Fish Torpedo;鱼雷动不平衡与质心检测技术的研究
2.A method for dynamic determination of the barycenter of surveying vessel in hydrographic survey海道测量船质心位置的动态确定方法研究
3.Based on the practical application of network topology stability,a hybrid cluster-head selected algorithm was put forward,it contained a cluster-head selected method which was based on the barycenter(or the energy center) and a cluster-head selected method which was based on the surplus energy.针对网络拓扑结构稳定的实际应用,提出了一种混合簇头选举算法,包括以质心(能量中心)为基础的簇头选举方式和以剩余能量为基础的簇头选举方式。
6)mass centre质心
1.n the missile s heads tech1Ology at present,analyze the NMD by the motion theory of the mass centre,there is a the conclusion that the NMD is limited.基于现有的多弹头导弹技术 ,通过质心运动定理分析导弹防御系统NMD的防御能力 ,从而得出结论导弹防御系统NMD的防御能力是非常有限的。
2.This point where the mass is concentrated is at the circumference (using the line linking the instantaneous centre with the mass centre as the diametre of the aircle运用J=r_c×mv_c+J′公式计算刚体相对瞬心的动量矩等于把质量集中在(以瞬心和质心的联线为直径的)圆周上的任一点相对瞬心的动量矩和刚体相对于圆上这点的动量矩之和。
延伸阅读

质心质心mass,centreof质点系质量分布的平均位置。质量中心的简称。它同作用于质点系上的力系无关。设n个质点组成的质点系,其各质点的质量分别为m1,m2,…,mn。若用r1,r2,…,rn分别表示质点系中各质点相对某固定点的矢径,rc表示质心的矢径,则有rc=mirimi。当物体具有连续分布的质量时,质心C的矢径rc=ρrdτ/ρdτ,式中ρ为体(或面、线)密度;dτ为相当于ρ的体(或面、线)元;积分在具有分布密度ρ的整个物质体(或面、线)上进行。由牛顿运动定律或质点系的动量定理,可推导出质心运动定理:质心的运动和一个位于质心的质点的运动相同,该质点的质量等于质点系的总质量,而该质点上的作用力则等于作用于质点系上的所有外力平移到这一点后的矢量和。由这个定理可推知:①质点系的内力不能影响质心的运动。②若质点系所受外力的主矢始终为零,则其质心作匀速直线运动或保持静止状态。③若作用于质点系上外力的主矢在某一轴上的投影始终为零,则质心在该轴上的坐标匀速变化或保持不变。质点系的任何运动一般都可分解为质心的平动和相对于质心的运动。质点系相对某一静止坐标系的动能等于质心的动能和质点系相对随质心作平动的参考系运动的动能之和。质心位置在工程上有重要意义,例如要使起重机保持稳定,其质心位置应满足一定条件;飞机、轮船、车辆等的运动稳定性也与质心位置密切相关;此外,若高速转动飞轮的质心不在转动轴线上,则会引起剧烈振动而影响机器正常工作和寿命。