特征参数

The relations of main characteristic with average velocity have been presented.

其次，本文对国内常见的上送风和侧送风方式，在等温送风不同风量的情况下，实测了房间工作区内不同高度上的气流特征，给出了不同情况下平均风速与主要特征参数的回归关系式，分析了不同送风方式和不同风量时工作区内气流特征的特点。

After hundreds of discharge experiments under the conditions of different capillary geometrical parameters, Ablation capillary materials, the comprehensive experimental character of free injection plasma generator is worked out.

通过在不同毛细管几何参数、不同消融毛细管材料、不同PFN放电参数、不同脉冲叠加方式条件下的百余次放电实验，得出了自由喷射等离子体发生器主要放电特征参数在不同条件下较全面的实验变化规律。

How to obtain effective, reliable characteristic parameter from the limited measured data is a question of great importance in feature extraction.

特征提取是目标识别的关键，如何从有限的测量数据中获取有效、可靠的特征参数，是特征提取中重点考虑的问题。

In accordance with the actual project, this paper fully considers the comprehensive factors of speaker recognition system on the basis of explaining speaker recognition's principle, such as recognition rate, recognition speed, system stability etc. LPCC is used as the feature parameter. LPCC can reflect the esthesia feature of human in pronunciation and has offered a group of succinct speech signal model parameters which signify the range of frequency spectrum of the speech signal more accurately and the operation amount is not comparatively big. Combined vector quantization technology, the speech searched system has been developed.

本文依拖实际项目，在阐述说话人识别原理的基础上，充分考虑说话人识别系统的识别率、识别速度、稳定性等综合因素，采用能够反映人对语音的感知特性的线性预测倒谱系数LPCC 作为特征参数，LPCC 的重要性还在于，它提供了一组简洁的语音信号模型参数，这一组参数较精确地表征了语音信号的频谱幅度，而分析它们所需的运算量相对来讲却不大；同时结合矢量量化技术，成功开发出语音检索系统。

By TM images the linear structures, water system, the outer edge of Tianchi Volcano trachite are extracted. By the sensitivity of SAR images to geomorphology, the distribution of parasitical volcano cone and lava fornix around Tianchi volcano are interpreted. With the aerial photos the parasitical lava of Qixiangzhan, Baiyun and Bingchang stage are filtered. At the same time by orthogonal cross-course wavelet transform, texture analysis is carried on to ERS-2 SAR images, and the texture characters are filtered. On the basis of the spectrum character of multi-band of TM images, multi-band algebraic grouping is made, and the factor of texture character factor and band grouping of TM images are input to BP neural network classification model. The good classified results are received.

利用TM图像对线性构造、水系、天池火山粗面岩锥体外边缘的提取；利用SAR图像对地形敏感特性，提取了天池火山周围寄生火山锥体及熔岩穹丘的分布；利用航片对天池火山口周围的气象站期、白云期、冰场期等寄生喷发物进行了提取：同时利用正交小波变换对ERS-2 SAR图像进行了纹理分析，提取了纹理特征：根据TM图像不同波段的光谱特征，进行了波段代数组合，并把纹理特征参数与TM图像的波段组合及DEM一起输入BP神经元网络分类器，取得了较好的分类效果。

However the posterior density functions of character parameter, skew parameter and location parameter are multi-mode, so the slice sampling is used to make the algorithm more efficient.

其中辅助变量的后验密度是单峰的，因此引入自适应舍选抽样来提高效率，而特征参数、偏度参数和位置参数的后验密度是多峰的，用切片抽样来处理效果较好。

Second, by analyzing the strain of northsouth blocks of the fault, we find an asymmetric displacement distribution between the two sides of the rupture, and the two blocks are subject to compressional and tensional stress respectively. It is a pattern that cannot be explained with the linear elastic theory. However, laboratory experiments and in situ measurements in boreholes have shown that many crustal rocks exhibit a nonlinear elastic behavior in compression and tension with a dependence of the Young's modulus on the minimum principal stress. So we suggest that the nonlinear displacement distribution should be considered when dislocation and hypocentral parameters are analyzed.

进而通过对地震南北盘同震应变的分析，发现了昆仑山地震的南北两盘分别受挤压和拉张两种应力作用，研究表明多种岩石在拉张和压力作用下其最小主应力下的杨氏模量表现出非线性弹性特征，从而提出对昆仑山地震地表位移及震源特征参数分析时应考虑非线弹性介质导致的非线性弹性位移分布特征。

After it is proved that the fractal dimensions are stable characteristic parameters of images, and there is correlation between them in undeformed and deformed states, the fractal correlation function are found for displacement measurement, which the correlation parameters are Box Dimensions.

在确定了变形前后数字散斑图像的分形维数之间具有相关性，而且其分形维数是稳定的特征参数之后，以图像的盒维数为相关参数进行互相关运算而形成分形相关函数。即利用变形前后数字散斑图像的分形维数序列做为相关参数进行相关运算，实现位移测量。

In order to study the relationship between plus contour and physiological factors,maximum of the derivative of plus wave was presented which is a new characteristic parameter,whose ad- vantages are high sensitivity and simple at calculation.

为了研究脉搏波波形特征与生理因素的关系，提出了脉搏波导数最大值这一新的特征参数，该参数具有灵敏度高、计算简单的优点。

The purpose of 3D measurement of foot is to extract feature parameters related with shoe manufacture and guide last design and manufacture for a pair of fit shoes.

脚型自动测量的目的是提取与制鞋相关的特征参数，并用这些特征参数指导鞋楦的设计，制造出合脚的鞋。

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。