特征参数

The study in this paper focuses on extracting the feature curves of the contour from radiation image containing a single object and using a nonparametric method further to extract and optimize the dominant points.

文章主要研究了从单一物体的辐射图像中提取轮廓的特征曲线，进一步使用非参数化的方法提取控制点并进行优化。

According to the above analysis, the dissertation find that the results get from nonparametric cointegration test are more reasonable and suitable to the nonlinear characteristics which as same as the data of stock return rate and inflation rate.

鉴于上述的分析，本文认为非参数协整检验得出的结论更为合理，且更加符合股票收益率与通货膨胀率的数据图形所显示的非线性特征。

The effects of normalization on the accuracy of classification and parameter optimization are discussed.

讨论了特征归一化对分类准确率和分类器参数的影响。

The natural frequency can be calculated using the numerical value method for the equation and a facility method to solve the natural frequency of chain structures is obtained.

建立了随机性结构参数的链式机械系统动力特性分析模型，利用Monte Carlo数值模拟方法获得系统的特征值随机变量的数字特征。

A parametric approach is proposed for the optimal trajectory tracking control problem of space rendezvous by using the eigenstructure assignment and the model reference method of linear systems.

基于线性系统的特征结构配置和模型参考方法，提出了一种空间最优交会轨迹跟踪控制的参数化方法。

In order to improve modeling capacity of combined subdivision surface, according to the characteristics of combined subdivision, parameter adjusting method and compound curve network construction method were presented.

为增强联合细分曲面的造型能力，根据联合细分的特点，提出了参数修改和复合曲线网两种特征构造方法。

The concepts of circuit variable space and circuit parameter space are proposed.

文中提出了电路变量空间和电路参数空间的概念，阐述了可以揭示元件本质和特征的理想电路元件的基本概念。

Keywords Feature;Parametric design;CSG equation;Fixture layout;and Geometric analysis of process

特征； 参数化设计； CSG 方程；夹具布局设计；工艺几何分析

Based on the proposed analytical general solution of the second-order Sylvester matrix equation,a parametric method of the state feedback eigenstructure assignment in a class of vibration second-order linear systems is presented.

基于二阶Sylvester矩阵方程的解析通解，给出了振动二阶线性系统的状态反馈特征结构配置设计参数化方法。

Finally,a numerical example shows the simplicity and effectiveness of the analytical general solution to the second-order Sylvester matrix equation and the parametric method of state feedback eigenstructure assignment.

最后，数值算例表明二阶Sylvester矩阵方程的解析通解和状态反馈特征结构配置设计参数化方法的简单有效性。

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。