特征参数

This paper analyses the effect of the damping ratio on dynamic characteristic in the second-order system.

阻尼比是二阶系统的一个重要的特征参数，它对二阶系统动态特性有较大的影响。

In the current paper, a non-rigid registration method is used to analyze the difference between two grayscale ultrasonic images of the tumor before and after compression. Then, two characteristic parameters named total deformation and shrink-magnify ratio are extracted, reflecting the tumor elasticity.

本文使用非刚性配准的方法，分析加压前后两幅灰阶超声肿瘤图像之间的差异，从而提取了形变总量和缩小放大比这两个反映肿瘤弹性的特征参数。

The main faults of DEH Control System are confirmed by FMEA firstly in the paper, The character parameters of evaluation are distilled according to the main faults.

本文首先对DEH系统进行FMEA分析，确定设备的主要故障，以主要故障为线索提取设备状态的特征参数。

A differential polarization curve method and its application in the investigation of the anodic desorption behaviors of interface corrosion inhibitor were proposed and expounded.

提出对半对数极化曲线进行微分的方法，得到的微分极化曲线及其特征参数可以更精细地表征缓蚀剂的阳极脱附行为

The effect of characteristic parameters on differential thermal analysis curve, solidification setup temperature and cooling rate on dendrite arm space was studied, and IAS-4 Image Analysis System was used for microstructural examination.

本文采用差热分析方法研究DTA曲线特征参数、凝固开始温度和冷却速率对二次枝晶间距λDAS的影响，同时使用IAS - 4图像分析系统分析了合金的微观组织。

A study of the relationship between the dilatancy of rocks and the characteristic parameters of utrasonic wave［J］.

岩石扩容现象与超声横波特征参数相互关系研究评述［J］。

The problem,"the monitoring parameters in time domain are of great variability and are sensitive to noise", may also be solved in this study.

运用连续小波变换方法对手术中采集的体感诱发电位分析处理，提取信号在时频域的三个新的特征参数。

At last, the classification method is discussed in accidence and a classification method based on decision-tree is presented. In the method, the characteristic parameters of cells are extracted through different methods such as the morphologic, chroma and texture of cells, and then normal cells are eliminated gradually by the means which screens out normal cells from roughly to accurately, and in the end suspicious tumor cells are sorted according to their dubiety.

最后，对细胞的分类方法进行了深入的研究，提出了一种基于判别树的层次分类方法，采用细胞的形态学、色度学和纹理等不同方法获取的细胞特征参数，采取"由粗到精、逐步筛选"的策略逐步剔除正常细胞，并根据可疑程度对疑似肿瘤细胞排序，辅助病理专家的诊断工作。

The development dysphasia of the hip is an illness commonly found among children. In the conventional treatment to DDH, the modification of the bone position is based on the analysis of feature parameters to 2D X-ray photo and the surgical result is highly dependent upon surgeon s personal experience.

儿童发育性髋脱位是一种常见的疾病，传统的治疗手术基于二维X光片分析特征参数，手术过程中凭医生经验确定调整位置，手术的质量和效率都有较大的提升空间。

The results show that the microstructure of ventra1 scale for python was composed of micro-convex and plank structure that was periodically arranged, it was mensurable and could be described by 9 characteristic parameters. Its surface was different in their forward and backward lean angle. The frictional coefficient of the ventra1 scale had closely relationship with moving direction, it decreased with the increasing load. The value of the frictional coefficient was about 0.07. The frictional coefficient while python moved backward and laterally were equal, and that was 33% more than that moved ahead. The frictional force of the ventra1 scale surface was caused by mechanical tooth function of micro-convex, acting intermolecular force and material's elastic hysteresis. The difference of forward and behind bevel for micro-convex was the anisotropy reason of frictional force.

结果表明：腹鳞表面的微观结构由指状微突体和板结构部分周期排列而成，其结构可用9个特征参数定量描述；腹鳞表面摩擦力由分子作用力、表面微突体的犁沟力、楔形作用力以及材料弹性滞后共同引起；腹鳞表面的摩擦系数在0.07左右并与运动方向有关，摩擦系数随载荷增加而减小；后向运动及左、右侧向运动时摩擦系数基本相等，比前向运动时高33%左右；腹鳞表面微突体不同方向上倾斜角度的差异是引起摩擦各向异性的主要原因。

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。