查询词典 gradient

After extracting target image gradient,this mehtod can put image gradient into CPM,and then figure out the affine transform parameter of the precongnition model and target image.

最后采用模板图像轮廓线在电场化后的梯度图像中的最大能量熵值，利用遗传算法确定先验模板图像与目标图像之间的仿射变换参数，达到轮廓匹配的目的。

Characteristics of the individual ecological field gradient of the endangered plant Alsophila spinulosa was studied by constructing the individual ecological field gradient model.

通过构建濒危植物桫椤个体生态场梯度模型，研究桫椤个体生态场梯度的变化特征。

According to the life form of species and their roles in communities, 6 species groups are used to do ordination analysis and environmental interpretation. The result suggests that:①Despite the strong man-made disturbance at lower altitude sites, the number and character of evergreen species show an change along the altitude gradient.②The rare and endangered species concentrated at two sectors along altitude gradient, corresponding to the upper and lower borders of the mountain mixed forest belt of evergreen and deciduous broad-leaved species.③The pioneer tree species concentrated on the middle and upper positions at lower elevation.④The deciduous accompany tree species show a great diversity on middle and lower position at middle and higher elevation.⑤Coniferous species differentiate along elevation and local topographical gradient.⑥Deciduous species in Quercus, Castanea, Fagus, Carpinus genus as well as coniferous species play primary community-constructing roles at different topographical position at Dalaoling region.

根据物种生活型及其在植物群落中的地位，分6个种组进行排序和环境解释，表明：①尽管低海拔地段受到强烈人为干扰，常绿种类仍显示了数量和性质沿海拔梯度的变化；②珍稀物种在海拔梯度上形成两个相对集中的区段，大致对应于山地常绿落叶阔叶混交林带的上下边缘；③先锋树种在中低海拔的中上坡位富集；④在中、高海拔的中低坡位，落叶的乔木伴生种显示了极大的多样性；⑤为数不多的针叶树种在海拔和局部地形梯度上也有明确分异；⑥它们和落叶的栎、栗、水青冈、鹅耳枥属物种在大老岭地区不同地形部位的植被中起着主要的建群作用。

The surface of image can be looked as a curved surface, and we can simulate a conicoid function in local area. Based on this function we can estimate the gradient and the curvature of the curved surface points, and set proper thresholds of gradient and curvature, we can detect the centre lines of roads with correlative process including removing small areas, area growth, thinning, etc. Lastly through seting proper thresholds of the gradient and the curvature again, the original road junctions can be detected and then verified by the road lines detected formerly.

基于微分几何的道路交叉口识别方法：把影像的灰度表面看作是一个曲面，在局部区域内拟合一个二次曲面函数，通过该函数来估算梯度和曲率并设定合适的梯度和曲率阈值来检测道路中心线，并进行相关处理，例如去除小区域、区域增长、细化等，然后再设定合适的梯度和曲率阈值，检测出初始道路交叉口，并用检测出来的道路来进行确认。

To master the formation of medullary osmotic gradient, the relationship between medullary osmotic gradient and urine concentration and dilution, the role of visa recta in maintaining medullary osmotic gradient.

尿液的浓缩与稀释—了解肾髓质渗透梯度的形成，肾髓质渗透梯度与尿液浓缩稀释的关系，直小血管在维持肾髓质渗透梯度中的作用。

In order to fully refect the geo-tech basic mechanics behaviors and to rationally explain the strain localization, this paper establishes the theory framework of gradient-dependent plastic model based on the theory framework of gradient-dependent plastic mechanics and in considering the plastic strain's gradient-dependence in double yield function, offers a kind of possible concrete pattern of the generalized plas...

为了较全面地反映岩土的基本力学性质，同时合理解释应变局部化现象，本文基于广义塑性力学的理论框架，在双重屈服函数中考虑了塑性应变的梯度依赖，建立了广义塑性梯度模型的理论框架，并给出了广义塑性梯度模型的一种可能的具体形式，分析了该模型的各个模型参数，尤其是其中的&局部化参数&的物理意义和可能对其产生影响的因素。

The paper describes the basic theory of high gradient magnetic separators and the state quo of the development of SLon periodic and continuous pulsating high gradient magnetic separators and SLon periodic and continuous vibrating high gradient magnetic separators.

介绍了高梯度磁选机的有关基本理论及SLon周期式和连续式脉动高梯度磁选机、SLon周期式和连续式振动高梯度磁选机的发展现状。

The device consisted of an array of 6×6 cell culture chambers, a drug gradient generator and fluidic control valves. Micro-dam structures of the chambers were able to trap cells while loading and drug gradient network generated drug gradient of 6 different concentrations. Also we applied hydraulic valves to control the microfluid and simulate the microenvironment of cells.

本研究介绍了一种利用SU-8负性光刻胶模具和PDMS制作双层结构的微流控细胞阵列芯片的方法，该芯片通过C型的坝结构将进样细胞拦截在芯片的细胞培养的固定区域，键合双层PDMS构成阀控制层，阀网络的开关作用成功实现了芯片通道内微流体的操控，同时芯片设计了药物浓度梯度网络，产生6个不同浓度的药物刺激细胞。

It means to combine effectively the gradient development model and the point-axis-surface development mode; and in the drainage area economy development coexist the growth pole development, the gradient one and the point-axis-surface one; after the combination of the point development, formed under the polarization effect of and diffusion effect of the growth pole, the band development, formed after the point-axis-surface development, and the generally rational division of labor of the upper, middle, and lower reaches of drainage area economy and gradient development, a huge band growth chain comes into being.

其基本思想是把梯度开发模式与点—轴—面开发模式有机地结合起来，流域经济开发中，增长极开发、梯度开发与点轴面开发模式并存，通过增长极的极化效应和扩散效应所形成的点状开发、点轴面所形成的带状开发与整个流域经济上中下游总体上的合理分工、梯度开发有机结合起来，进而形成带状的巨大增长链。

In the paper two k inds of framewo rk of st rain gradient p last icity recent ly developed and their applications are review ed: st rain gradient plasticity for CS solid—— the couple stress theory, strain gradient plast icity for SG solid.

介绍两种应变梯度塑性本构模型： CS 应变梯度塑性理论——偶应力理论、SG 应变梯度塑性理论。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。