特征参数

The character and distribution rule of CC round billet internal defect are analyzed and the relation between the defect and process parameters are found, which provide the reference for the billet quality improvement.

本文分析了包钢连铸圆坯内部缺陷的特征及分布规律，找出了内部缺陷与生产工艺参数之间的关系，为改善圆坯质量提供了依

Through the low cyclic load test of eight high strength concrete-filled square steel tubular columns, considering the effect of the axial compression ratio, steel ratio and slenderness ratio, the hysteretic curve, ductility, degradation of stiffness, energy dissipation capacity, failure mechanism and characteristics of the specimens were researched.

摘要］以轴压比、含钢率和长细比为参数，进行了8根方钢管高强混凝土柱的低周反复荷载试验，研究分析了该类构件的滞回曲线、延性、刚度退化、耗能能力、破坏机理和破坏特征；并与型钢高强混凝土柱的受力性能进行了比较分析。

Spatial variations of a degree-day factor have great impacts on the accuracy of snow or ice melt modeling.

度日因子是该模型的重要参数，反映了单位正积温产生的冰雪消融量，其空间变化特征对于不同模型模拟冰雪消融过程的精度有较大影响。

Based on the comprehensive analysis and studies to main types of domestic and foreign equipments, it makes a design to the main parameter s of this new - type coal slurry centrifugal dehydrator.

阐述了筛篮倾角为20°的LLL1030新型煤泥离心脱水机的结构和主要技术特征，在综合分析国内、外主要设备类型的基础上，对该新型煤泥离心脱水机的主要参数进行了设计。

Using the apparatus of high stress and high hydraulic pressure developed by author, a series of tests was carried out, and the expressions of dewater consolidated settlement with hydraulic pressure and coefficient of permeability with efficient stress was obtained.

通过自行设计的高应力、高水压试验装置，进行了一系列的试验，获得了疏排水沉降量与水压变化、渗透系数与有效应力之间的关系表达式；首次对回归系数的主要影响因素从颗粒级配的特征粒径和特性参数入手，进行了系统的分析；得到了压缩模量与水压降的正相关关系式；提出了一种简便、易行的先期固结压力的确定方法，并对深土力学特性进行了初步研究；推导了各种边界条件下Terzaghi 和Biot 固结理论的水头及沉降量的解析解或半解析解；编写了隐式差分

Firstly, a quantitative relation about finite deformation and geometrical parameters which exhibit variation of laser spectral image was introduced. And then, particular emphasis was put on some important computer processing steps related to the analysis of spectral image, such as digitizing, segmentation, feature extraction and analytical algorithms. Lastly, some examples about an experiment of a ring subject to large diametral compression were given.

文中首先给出了有限应变和平均整旋角与反映频谱图像变化的几何参数之间的定量关系，然后着重介绍了与频谱图像分析有关的数字化、分割、特征提取和分析算法等重要的图像处理过程，最后给出圆环受径向荷载大变形实验的分析实例。

In this paper, we give the TEM tunnel prediction configuration. After analyzing the special condition of tunnel location, we introduce "moving plate" theory and create the imaging system of TEM prediction based on the parameter of secondary differential conductivity.

文中介绍了瞬变电磁超前预报的工作装置形式；通过对掌子面特定环境的分析，提出引用"浮动薄板"理论，以二次电导微分参数为特征量建立隧道超前预报成像系统。

Microstructure properties of gas diffusion layer in PEM fuel cells were described by fractal dimension s in fractal theory.

采用分形理论中的重要参数分形维对质子交换膜燃料电池扩散层的微结构特征进行描述。

ased on the parameters of real structure and physiology of Beijing firefly's compound eye, an analogue of the dioptric system of an ommetidium was established.

以实际的北京萤火虫复眼结构与生理参数与依据，基于已知的GRIN透镜特征，把小眼的整个光学系统分成几个部分被模型化。

The 7-day low flow was regarded as statistical quantity, on the base of analysis of the discordancy measure and heterogeneity measure, the regional low flow frequency for Donjiang basin was carried out using L-moments based five frequency distributions with three parameters viz. Generalized Pareto, Generalized extreme-value, Generalized Logistic, Lognormal (LN3) and Pearson type Ⅲ. Based on the L-moments ratio diagram,{Z} and τ4-statistic criteria, LN3 distribution was identified as the most appropriate distribution for the homogeneous region with the 14 sites.

以年最小七日平均流量作为枯水径流的统计特征量，在水文站点一致性分析、水文相似区鉴别的基础上，以常见的5种三参数分布函数：Generalized Pareto分布、Generalized Extreme-Value分布、Generalized Logistic分布、LogNormal分布(LN3)和Pearson type Ⅲ为研究对象进行东江流域区域枯水频率分析。

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。