质心
- centroid;center of mass;centre of mass;barycenter;barycentre
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[barycenter;centre of mass] 质量中心,物体作用力(合力)的中点位置,该点受力时物体只作平动而不发生转动
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研究较小物体时,把质心看作与重心重合
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液类货物运输中质心位置的计算分析
Calculating analysis on the barycenter location in transporting of liquid goods
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质心测量平台的研究与设计
Study and Design on the Platform of Barycenter Gauging
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要避免含糊,这些定律所指的应当是质心的速度和加速度。
To remove the ambiguity , these laws should refer to the velocity and the acceleration of the center of mass .
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推导了载体非质心处的比力方程,并给出了无陀螺捷联惯导系统的解算流程,为编制DSP应用程序奠定了基础。
The specific force equation at the noncentraled of the body is deduced .
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星载SAR多普勒质心估记的新方法&幅度相关法
A new method to estimate Doppler centroid for Spaceborne sar-amplitude correlation method
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用于Anger型γ照相机探头的基于质心引导的三维最大似然定位算法
Centroid Guided 3D Maximum Likelihood Positioning Algorithm for Scintillation Gamma Camera
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用噪声模型估计星载SAR的多普勒质心
Doppler centroid estimation of spaceborne SAR with noise model
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Paul阱中被囚禁离子质心运动k分量相干态的压缩效应
K component Coherent States of Ion in the Paul Trap and their Squeezing Properties
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影响发光二极管(LED)颜色的光谱参数有:峰值波长、带宽、主波长和质心波长。
Peak wavelength , bandwith , domain wavelength , and centroid wavelength are factors affecting on light color of LED .
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由质心的定义可知,它就是x的平均值。
If I look at the definition of the center of mass , it 's the average value of x.
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利用AutoCAD快速确定装备质心位置的方法
The method of determining the centroid position of equipment by means of AutoCAD
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基于时频滤波的SAS解多普勒质心模糊改进算法
Improved Doppler Centroid Ambiguity Resolving Algorithm of SAS Based on Time-frequency Filtering
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在静止质心系上它与MIT袋模型等价;
In the rest CM-system , the model is equivalent to the MIT bag model ;
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本论文依据衰减理论建立了层状地层纵波、转换波的衰减模型,利用谱比法、叠前CMP道集法、质心频移法对纵波和转换波的Q值进行反演。
The attenuation models for P-wave and converted wave are based on attenuation theories of media in the paper .
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所编制的程序能自动生成包含主要结构件和内部布置的飞翼CAD模型,并能计算出飞翼无人机质量特性计算和质心位置。
The programs were developed to automatically generate the CAD model of the structural and internal layout of fly-wing UAV , and predict the mass and the centroid .
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介绍一种精确的方法,在质心坐标系中,把量子N体系统的整体转动自由度和内部运动自由度完全地分离开来。
A method without any approximation to separate the global rotational degrees of freedom in the Schrdinger equation for an N - body system completely from the internal ones is presented .
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若随机初始化质心,则采用取相对表达水平的预处理方式,以欧几里德距离(EuclideanDistance)作为相似性测量准则,可以获得最佳的聚类结果;
However , if the centroids are initialized randomly , clustering on the relative expression ratio under Euclidean distance metrics can obtain the best results .
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JC模型下原子质心运动对原子动力学行为的影响
The Effect of Atom Mass Center Motion to the Behavior of Atom in Cavity
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采用重心算法、hough变换算法、以及通过质心计算螺牙间距的方法实现了对三个几何参数的检测。
Mass center algorithm , hough transform algorithm and screw pitch calculation method are applied to measure the geometry parameters .
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针对某型反舰导弹自动驾驶仪航向控制通道的不足,提出一种利用GPS实现的侧向质心控制方案。
It is quite expensive to use INS ( Inertial Navigation System ) method to make corrections for lateral deviations of midcourse trajectory of antiship missile due to gust and gyro drift .
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论文成功地解决了ADAMS与SOLIDWORKS等软件的接口问题,正确提取和传递了构件实体模型和各种信息(如质心、质量及转动惯量等);
The interface problems between ADAMS and SOLIDWORKS were solved and necessary information about all components in the machine were collected and transferred .
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采用了一种基于HSV模型,应用H参数特征值来识别特征物体并获得其质心点坐标的方法。
A HSV model based method which has been used for discerning feature objects and capturing the coordinate of their center using H-parameter Eigen value has been achieved .
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CTM型综合测试仪在汽车质心高度测试中的应用研究
Experimental Research on Application of CTM Testing Instrument for Measuring Height of An Automobile 's Mass Center
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首先,根据系统结构的几何关系并结合系统对总质心的动量矩守恒关系,导出了其末端抓手运动速度与关节铰速度之间的广义Jacobian关系;
First , combining system geometry and momentum conservation equation , the generalized Jacobian matrix for the space manipulator is derived ;
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k-Means(以及模糊k-Means):根据项目与之前迭代的质心(或中心)之间的距离将项目添加到k集群中。
K-Means ( and fuzzy k-Means ): Clusters items into k clusters based on the distance the items are from the centroid , or center , of the previous iteration .
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由于方位多普勒质心和多普勒带宽与不同的几何布局有关,侧重分析了双站SAR平飞模式等距离不同方位点目标的多普勒信息。
Since the Doppler center-frequency and Doppler bandwidth are related with different geometric models , this paper gives particular emphasis on analyzing Doppler information of different targets at the same range under parallel model .
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将此图像数据运用Legendre矩找出图像的质心和主轴,进而完成图像的平移、缩放和旋转,以实现CT和MR图像的融合。
These image data were input into computer the center and main axis of image were located by Legendre moment then the CT and MR images were registered by translation , scaling and rotation .
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在对激光光斑质心坐标的提取过程中,对比研究了质心法、加权质心法、Hough变换法与圆拟合法。
In the center extraction process of the laser spot , the centroid , weighted centroid , Hough transform and circular fitting methods were studied comparatively .
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本文介绍了CTM型综合测试仪用于汽车质心高度测试的研究结果。
This paper deals with the application of CTM instrument for measuring the hight of mass center of an automobile .
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将衬垫抽象为某一质量m、质心O(a,b)的准自由落体,其运动为自由落体基本运动和绕固定点回转的牵连运动。
The lining is abstracted to be a quasi freely falling body with mass m and centroid O ( a , b ) ; and its motion , to be basic motion of freely falling body and involving motion revolving around fixed point .