矩

Finally, non-Newtonian property of the blood was considered. The constitutive equations based on the Casson model was adopted,and the corre.

本文第三部分工作采用基于Casson模型的流体本构方程研究了血液的非牛顿特性对动脉狭窄流场的影响，导出了非牛顿流体对应的有限元矩距。

Cauchy distribution is a particular one in probability and it has a lot of special properties.

柯西分布是概率统计学中的一个极具特色的连续型分布，其独有的性质历来备受重视，利用特征函数这一工具，讨论了柯西分布的结构、矩存在性、可加性、无穷可分性等概率性质。

Variable speed system of cycloconverter-fed multiphase synchronous motor is a major area in the development of high-power AC drive system because of its small dimension, large capacity, high torque, high-rate power, wide-range variable speed, low harmonic pollution, and reliable safety. In the low-speed and large-capacity industrial drives, such as rolling mills, winding motors, marine propeller, cement mixer, etc. it will find a wide application in the future.

采用多相同步电动机的交交变频调速系统，具有体积小、容量大、高转矩、高功率比、宽平滑调速区、谐波污染小、安全可靠的特点，是大功率交流调速领域的主要发展方向之一，在轧机，矿山卷扬，船舶推进，水泥球磨机等低速大容量的场合有着广泛的应用前景。

The symmetry no longer existed when the projection of light source is not located in the symmetry center of rectangular aperture.

当光源的孔面投影不在矩孔中心时光强分布的对称性不复存在。

Inaddition,we propose a so-called symmetric random weighting method to deal withthe case when the third central moment of underlying population is zero.

此外，我们还提出了所谓的对称随机加权法以处理总体三阶中心矩为零的情形。

The paper consists of three parts. First, we give the calculation for every order central moment for the Logistic population, mean vector and covariance matrix of the order statistic of random sample from the Logistic population, and means of several special functions for the order statistic of random sample from the Logistic population. Secondly, we discuss the parameter estimation for the Logistic population. Finally, we solve the question about the goodness-of -fit test for the Logistic population.

研究的主要内容分三部分：第一部分是关于Logistic总体各阶中心矩、样本次序统计量期望向量与协方差阵及若干个特殊的样本次序统计量函数期望的计算问题；第二部分是关于Logistic总体分布参数的估计问题；第三部分是关于Logistic总体的拟合优度检验问题。

This algorithm firstly calculates the fourth-order cumulant and second-order central moment of the window and identify noise threshold. Later it adaptively adjusts the filter windows and right value according to the number of the noise points in the window.

算法首先计算窗口的四阶累积量和二阶中心矩并确定噪声点阈值：然后根据窗口内噪声点个数自适应调整滤波窗口，自适应计算权值；最后对噪声点逐点滤波。

The dips deriving from transformer energizing can be distinguished via ST contour easily, and the dips caused by faults or motor inductions are classified using corrected first central moment and phase angle curve of amplitude envelope vectors from S-matrix.

利用S变换时频等值线图可以容易地识别由变压器激磁引起的电压凹陷；对于由各种故障和感应电机启动引起的凹陷，通过求取S矩阵幅值包络向量的修正一阶中心矩和相位变化曲线实现了分类。

Therefore,there will be an optimized order in high moment centroid algorithm.

所以，在各高阶矩质心算法中，必然存在一优化阶数。

With replacing the chain by equivalent sphere,a cluster is simplified to a planar array,and this planar array is simplified to a chain,then the dipole moment is obtained.

在这一过程中，通过不断增加等效球的尺寸，将颗粒间的相互作用包含在簇的偶极矩中。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。