centroid

1. First, there is a method ST_Centroid defined for polygons.
   首先，有一个为多边形定义的方法STCentroid。
2. We take a point on the geometry the centroid compute the value for that point on the space filling curve, and store the result in an additional column.
   我们在几何图形上取一个点，即形心点，计算那个点在空间填充曲线上的值，并将结果存储在一个附加的列中。
3. For example centroid analysis and to facilitate them to learn and use.
   对于形心分析和算例，方便大家学习和使用。
4. Effects of eye cyclotorsion and pupil centroid shift during corneal refractive surgery
   眼球旋转和瞳孔中心移位对角膜屈光手术的影响
5. In the theory of distance discrimination, we often do discrimination analysis by centroid distance method.
   距离判别理论中，通常采用重心距离来定义类与类之间的距离对待判样品进行判别。
6. In this paper, basing on three-axis's stable dynamic equations of moving centroid reentry vehicles, the dynamic inversion controller was designed under three-axis's stable control mode.
   在推导三通道稳定再入飞行器动力学方程的基础上，运用动态逆控制理论设计了三通道稳定模式下变质心再入飞行器的控制系统。
7. To improve the efficiency of symbolic recognition and enhance the robustness of identification methods, a symbol recognition method based on the characteristics of the centroid is presented.
   为提高面结构光检测中符号识别效率和增强识别方法的鲁棒性，提出了一种基于形心特征面结构光符号识别方法。
8. Research and Simulation on the Effect of Excursion of Centroid on Attitude Control System
   质心漂移对姿态控制系统影响的研究与仿真
9. Using mixed window function and subband spectrum centroid in MFCC feature extraction process
   混合窗函数和子带频谱质心在MFCC特征提取过程中的应用
10. Based on these formulas, the relation of Doppler centroid frequency between GEO SAR and LEO SAR is analyzed.
    基于上述公式，分析了地球同步轨道SAR多普勒中心频率与低轨SAR的联系；
11. 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
12. In the fully plastic condition, the neutral axis does not necessarily pass through the centroid.
    在全塑状态下，中性轴不一定需要通过形心。
13. Precise Locating Method for Centroid of Electron Beam with Large Diameter
    大直径电子束束斑质心精确定位方法研究
14. Research of location based on mixed algorithm of weighted centroid and DV-Hop in WSN
    基于加权质心和DV-Hop混合算法WSN定位方法研究
15. An approach is proposed that this deviation can be obtained by using the weld pool image centroid and a Kalman filter.
    为此提出一种利用熔池图像质心和卡尔曼滤波来间接获取电弧与焊缝偏差的方法。
16. Algorithm to identify image centroid and angle motion based on Taylor series expansion
    基于泰勒级数展开的图像质心和角度偏移识别算法
17. The Research and Improvement of Centroid Localization Algorithm of Wireless Sensor
    无线传感器质心定位算法的研究与改进
18. In basic framework of total system, signal stage, isomorphic simulation for centroid chaff countering anti-ship missile terminal guidance radar, models of warship were researched.
    在全系统的、信号级的、同构的仿真研究基本框架下，从研究针对反舰导弹末制导雷达的质心式箔条干扰的目的出发，对目标舰的有关模型进行了研究。
19. In order to improve the precision of the method which is used to resolve Doppler centroid ambiguity of SAS, an improved method for the wavelength diversity algorithm is proposed in this paper.
    为提高合成孔径声纳（SAS）解多普勒质心模糊的准确性，文章对传统的解模糊算法-波长差异法进行了改进。
20. Error analysis for gate centroid tracking algorithm of infrared imaging
    红外成像波门形心跟踪算法的误差分析
21. Effect of liquid propellant space engines system on centroid drift
    液体推进剂空间发动机系统对质心漂移的影响
22. This system adopts difference algorithm to detect moving target, and uses centroid tracking to track the target automatically.
    该系统运用差分法来检测运动目标，并采用形心跟踪法来自动跟踪目标。
23. Logistics Center, Site-selection, Model for Centroid Method, Analytic Hierarchy Process, Case Analysis.
    物流中心；选址问题；重心法模型；层次分析法；实例分析。
24. The properties of Doppler centroid frequency and Doppler frequency rate of GEO SAR is discussed in detail.
    探讨了同步轨道SAR多普勒中心频率和调频率的特征。
25. Then the significant region is obtained from the normalized image by utilizing the invariant centroid theory.
    然后结合不变质心理论提取出归一化图像的重要区域；
26. Study on Centroid Measurement Technology and System of Small Agricultural Machinery
    小型农业作业机质心测量技术及系统的研究
27. An algorithm to recognize unconstrained handwritten numerals based on centroid layer feature is proposed in this paper.
    采用了基于字符质心的层次特徵对无约束手写体数字进行分类识别。
28. A self-adaptive feature extraction method based on power spectral centroid is proposed.
    提出一种基于功率谱重心的自适应特征信息提取方法。
29. It is researched that how to realize Doppler centroid estimation with ACCC accurately both simulation data and real data. A better result is obtained.
    研究了利用平均相位增量法精确估计多普勒中心的仿真实现过程，并利用这种方法对实测数据进行了中心估计和成像，取得了较好的效果。
30. Performance Analysis of Doppler Centroid Tracking for ISAR Autofocusing
    逆合成孔径雷达多普勒质心跟踪法性能分析

noun

1. the center of mass of an object of uniform density