特征尺度

首次提出旋涡脱落特征尺度来定量分析非稳态尾流，是一次意义重大的钝体绕流理论和实验分析方法上的创新。

Of particular significance to the theory in flow over bluff body and the experiment analysis methods was the definition of vortex shedding character dimension , which was first proposed by the researcher to analyze the time-dependent wake flow quantitatively .

模拟计算结果表明：BSS不均匀体的特征尺度随高度变化可以导致闪烁谱和不均匀体谱之间谱指数的显著差异。

The simulation shows that the variation of irregularity characteristic scale with altitude can result in large difference in spectral index of scintillation power spectrum and irregularity power spectrum .

EMD基于信号的局部时间特征尺度分析原信号，克服了傅里叶变换用高次谐波频率分量拟合非线性、非平稳信号的缺点。

Fourier transform method use high order frequency to analyse and imitate nonlinear and non-stationary data .

Virgo星系团内次结构的特征尺度

Characteristic Scales of Sub structrues in the Virgo Area

特征尺度上准确定位QRS波及T波的起始点，从而获得QT间期的精确值。

The onsets of QRS wave and T wave was identified in the characteristic scales to provide accurate parameters of the QT interval .

仅通过单步光刻和相对廉价的湿法腐蚀步骤，制作具有纳米特征尺度、表面相位台阶连续分布的DOE器件。

The DOE device with nano-scale features and continuous phase-step distribution , can be fabricated only through single-step photolithography and low cost wet etching process .

进一步分析表明，多晶和单晶Cu薄膜的特征尺度依赖于材料内部的几何需要位错密度，其中材料特征尺度表征了应变梯度控制的尺寸效应。

Further analysis shows that the material characteristic length scale is dependent on the density of geometrically necessary dislocation inside the materials . It is also suggested that the size effect dominated by strain gradient can be quantified by the material characteristic length scale .

传统的光学光刻技术由于受光波波长和数值孔径等因素的限制难于制作特征尺度小于100nm的图案。

Due to the restrictions of light wavelength and numerical aperture , conventional lithography is difficult to obtain sub - 100 nm patterns .

提出一种小波相关特征尺度熵WCFSE的预测特征信息提取方法。

A prognostics feature information extraction approach was proposed based on wavelet correlation feature scale entropy WCFSE .

CMP过程中的机械作用力会导致加工表面的损伤，随着集成电路特征尺度不断缩小，必须不断减小抛光压力已满足低强度Cu/low-k互连结构的平坦化要求。

With the continuing shrinking of IC feature size , the contact pressure in CMP process , which will induce surface damage , must be constantly reduced to satisfy the demands of planarization of Cu / low-k interconnects with low mechanical strength .

单相合金定向凝固的特征尺度和过冷度研究

Research on the characteristic scale and undercooling during directional solidification of single-phase alloy

特征尺度理论与企业发展战略的层级结构

A Characteristic-scale Theory and Hierarchical Structure for the Enterprise ′ s Development Strategies

但是由于网络业务量具有无特征尺度的突发性，带宽资源经常可能处于相对稀缺的临界状态。

Because of scale-free bursts of network load , bandwidth is often critical resources .

同心球与同轴圆柱的特征尺度

Characteristic length of concentric sphere and concentric cylinder

地震活动和大地构造的特征尺度

Characteristic scale of strong earthquakes and tectonics

基于特征尺度及多尺度分解的纹理分割

Characteristic Scale and Multiscale Analysis-based Texture Segmentation

结果显示：对冷却通道施加振动可以改变表观晶粒形态和特征尺度；

The results show that : vibration imposed on the chilling path can change the apparent grain morphology and characteristic scale ;

与传统的统计参数相比，分形维数和特征尺度具有一定程度尺寸独立性。

To compare with the traditional statistic parameters , the fractal dimensions and characteristic scale are scale independence to some extent .

基于光子晶体的功能器件特征尺度为光波长，比传统的光学器件体积小得多。

The size of photonic crystal devices is scaled down to the sub-micro-range , which is far smaller than conventional optical devices .

系统是事物普遍存在的表现形式和运行方式，系统特征尺度是系统的基本特征之一。

System is the general behaving and running style of objects , and system characteristic scale is one basic feature of it .

选取适当的参量，计算得到的自生磁场的特征尺度与已有理论模型的结果一致。

Choosing appropriate parameters , the characteristic scale of magnetic field obtained from numerical calculation is consistent with the existing theoretical model .

计算得到了上游壁面涡的特征尺度，结果表明上游壁面涡具有高度的三维性，其特征尺度依赖于流速比和环境水深。

The computed characteristic scales of the upstream vortex show distinguished three-dimensionality and vary with the velocity ratio and the water depth .

该方法考虑两点联合概率密度函数方程，引入空间特征尺度，因此解决了以往映射封闭方法中分子扩散速率无法确定的问题。

A length scale is introduced by a two-point joint probability density function , to account for the evolutions of the conditional diffusion .

在地震长波长情况下，相同特征尺度的圆形干裂纹比薄的干裂纹对弹性波散射更有效。

In the long wavelength domain , the circular cavities are more effective than thin cracks with the same length in elastic scattering .

一般砂岩的连续性特征尺度在厘米量级，而溶洞型碳酸盐岩的连续性特征尺度在米量级。

The characteristic scale of continuity for sandstones is generally centimeter - scale , while that for cavern carbonates is meter - scale .

信号的多分辨经验模分解方法可以解释为以信号极值特征尺度为度量的时空滤波过程。

The multiresolution empirical mode decomposition method of signal can be interpreted as spatial filtering based on the signal 's extremum characteristic scale .

基于以太网的数控系统的特点，提出了一种基于特征尺度的层次化体系结构。

Based on the features of the Ethernet-based NC system , this dissertation puts forward a hiberarchy basing on the characteristics of the level .

同时，本文还讨论了小波基函数的选取、特征尺度的选取等问题。

Simultaneously , some problems such as how to select wavelet basic function and determine the feature scales etc , are discussed in this thesis .

研究证据表明许多自然系统和生物系统没有固定的特征尺度，而是展现自相似特性。

Recently , more and more evidences suggest that many natural systems and biological systems have no fixed characteristic scales , but they exhibit self-similarity .

微重力科学研究的地面模拟实验为了尽量减小重力的影响，通常要求被研究的对象特征尺度较小。

To reduce the gravitational effect in the microgravity experiment on ground , the character sizes of objects that are researched are generally very little .