特征参数

The main contents of the course is as follows: events and their probability, random variables and their distributions, moments, point estimation and interval estimation, hypothesis testing, etc.

课程的内容主要包括：事件与事件的概率；随机变量的概率分布与数字特征；参数的点估计；区间估计和假设检验等。

By using in a sequence the eigen-decomposition,a permutation,the inverse discrete Fourier transformand a truncation on the matrix,an exact and explicit parametrization formula for Loop subdivision surfaces is proposed.

利用控制网格拓扑结构的对称性，通过将奇异点周围1-环和2-环的控制顶点进行离散Fourier变换得到分块对角阵，将其进行特征分解及排序之后，再通过离散Fourier逆变换和截断等操作得到细分矩阵的高次幂的表达式，从而得到Loop 细分曲面新的精确参数化公式

Jacobian matrix is one of the important parameters of robots.

雅可比矩阵是描述机器人特征的重要参数之一。

The analytical approach/tool of MultipleScale Integrated Assessment of Societal Metabolism, proposed by Mario Giampietro,Kozo Mayumi, et al., based on the congruence among resource "Human Activities", resource "Exosomatic Energy Flows", and "Added Value Flows" in the hierarchical socioeconomic systems, using, in an integrated way, incommensurable variables referring to nonequivalent descriptive domains(coming from various scientific disciplines) and data gathered at distinct hierarchical levels, addresses the various relevant dimensions of societal development and sustainability.

社会代谢多尺度综合评估"分析方法，根据"人类活动"资源、"体外能"资源和"增加值三者在社会经济系统中的叠合关系，将各个尺度（如国家、经济部门、次级部门、省/州、社区、直至个别家庭）上，社会经济系统的能量代谢过程，与该系统的经济、人口（如人口的年龄结构和性别构成）、生态和社会（如义务教育和退休年龄的规定）特征结合起来，利用多个关系式，计算出社会经济系统的人类活动量、体外能投入量、劳动生产率、生物—经济压力和体外能超循环强度等参数、指标，进而综合地分析评估社会经济系统发展与可持续性。

Laplace transform is used to obtain the analytical solut...

用拉普拉斯变换求出了此数学模型的解析解及长、短时渐近解，分析了压力动态特征和参数的影响。

Molecule frame of paraffin ; bond abutting of value; abutting matrix latent root （X_（1cc）; X_（2cc））; dist-integral root of connect index; paraffin ; bond dissociation energy; molecular topology indices ; spatial steric hindrance parameter

分子图；子图；键邻接值；邻接矩阵特征根（X_（1cc）； X_（2cc））；距离积方根连接性指数（X_（1-j））；链烷烃；键离解能；空间位阻参数

Through the characteristic parameters, the system's real-time moment of inertia is given. Then golden section adaptive control law and logic derivative control law both based on moment of inertia are designed. The two kind of control laws are combined to control the attitude of spacecraft and their simulation results are compared with the ones of PD control law which is designed based on the certainly-known system model. The results show that this adaptive control law is effective on the kind of time-variable system studied in this paper.

根据特征模型的参数推算了系统实时的转动惯量，设计了基于转动惯量的黄金分割自适应控制器和逻辑微分控制器，将这两种控制器相结合对带有可伸缩挠性附件的刚体进行姿态控制，仿真结果与基于确知系统模型所设计的变系数PD控制器相对照，表明了该自适应方法控制一类时变系统的有效性。

In the research of image system, a image processing algorithm of welding seam is established on the basis of image math. model of structured light of Fourier-transformation of lens in space, and the image analyzing system based on the rule-model of the features of welding seam in 3D-space is also established which can meet the requirements of the auto-programming of welding parameters for arc welding robot in accuracy and reliability.

在焊缝图象系统的研制中，基于结构光空间付氏变换的光纹图象数学模型，建立了焊缝图象处理算法，并基于焊缝三维空间特征的规则模型，建立了焊缝图象分析系统，使焊缝检测与分析的精度和可靠性达到了弧焊机器人焊接参数自动规划及焊接路径自动规划的精度要求。

And analyzed experimental phenomena and microcosmic character on theory. Than obtained techniques parameters under which prepares fine comprehensive produce. All this provided the technique support to call backing limekiln gas and industrialization of preparation white carbon using carbonization method.

并对实验现象和微观特征进行了深入的理论分析，取得了制备综合性能较佳的产品的工艺参数，为石灰窑气的回收利用和碳化法白炭黑制各的工业化提供技术支持。

There have two kinds of reservoirs: quartz sandstone and lithic sandstone. The reservoirs have different well logging attributes, different relations among their physical parameters and well logging interpretation models.

研究区上古生界储层存在石英砂岩与长石砂岩两种类型，对应测井属性特征及其物性参数之间的关系、测井解释模型等均存在明显差异。

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。