vector fields造句
例句与造句
- the main contribution of the dissertation is to study the basic theories of the vector fields of neighborhood variation, and then it is used to describe visual characteristics and to establish the relative system . the result proves it is effective
本文重点研究邻域灰度变化矢量场基本理论,并用于描述图像视觉特性,建立相应的图像视觉特性检测算子,进而用于图像目标检测与分割系统,取得了良好的效果。 - the last, we study the properties of the basic vector field and 1-form in the poisson-nijenhuis manifold, making a systematic organization of these contents and giving some appropriate adds . therefore, we unified with the conclusion of the poisson vector field on poisson manifold in reform
最后我们研究了poisson-nijenhuis流形上基本向量场和基本1-形式，对已有的成果进行了系统的整理，并加以补充。由此将poisson-nijenhuis流形上基本向量场和泊松流形上的泊松向量场从形式上得到了统一。 - the last, we study the properties of the basic vector field and 1-form in the poisson-nijenhuis manifold, making a systematic organization of these contents and giving some appropriate adds . therefore, we unified with the conclusion of the poisson vector field on poisson manifold in reform
最后我们研究了poisson-nijenhuis流形上基本向量场和基本1-形式，对已有的成果进行了系统的整理，并加以补充。由此将poisson-nijenhuis流形上基本向量场和泊松流形上的泊松向量场从形式上得到了统一。 - the modified zndx in comparison with others is well indicative of the severity and extent of flood / drought event and of more objective classification of them, which is therefore quite applicable to a extended area . ( 3 ) the main anomaly structures of grades of drought / food in summer over northwest china present pluvial pattern and dry pattern in all the areas, and spatial changes are opposite pattern from the noth to the south and the west to the east . the first four rotated loading vector fields represent four principal precipitation anomaly areas : the weishui river basin, east of the qinghai-xizang plateau
但修订过的zndx指数根据气温、土壤湿度及前期气候湿润度等因子能够客观的反映出西北地区的旱涝特征。(3)西北地区季与年区域旱涝等级表明：西北地区的干旱雨涝有显著的阶段性和年际变化特征。1980’s到1990’s中期，气候较湿润，土壤湿度增墒较明显；1990’s中期以后是40年干旱最异常的时段；1960’s旱涝交替发生，旱涝趋势接近常年；1970’s气候虽干旱，但没有1990’s中后期显著。 - we extend this result which is similar to ones of hirsch [ 1l ] and jiang [ 2 ] for 3-dimensional cooperative system . furthermore, in the paper we discusse the cone of km, and obtain the similar result : theorem b : let f be a continuously differentiable cooperative vector field on d, suppose the following conditions hold : ( a ) d is pm-convex; ( b ) every forward semi-orbit has compact closure in d; ( c ) there is not more than one equilibrium p, then there is a unique equilibrium p and it is globally asymptotically stable
此外，本文还将在k_m锥下讨论此问题，并得到平行的结果：定理b：设f是d上一个连续可微的合作向量场，假设如下条件成立：(a)d是p_m凸的；(b)d中的每一个正半轨道有紧闭包；(c)至多有一个平衡点p，则一定存在唯一的平衡点p，并且是全局渐近稳定的。 - It's difficult to find vector fields in a sentence. 用vector fields造句挺难的
- the proposed algorithms have good performances . some improvement on the gvf snake algorithm is presented to solve the problem of gvf snake's inability to converge to the rough contour of the brain . a variable vector field is designed and the constraint parameters of the gvf field is made adaptable to the target object features
本文的研究工作主要包括以下几个方面：针对gvfsnake算法提取脑轮廓时不能很好的收敛于光滑性差的脑轮廓的问题，对gvfsnake算法进行了改进，构建了一动态变化矢量场，把gvf场的约束权值设为随目标特征自适应变化，从而提出了一种新的算法，称之为agvf(adaptablegradientvectorflow)snake。 - the visualization of vector fields has consistently been a challenging issue in the visualization field . it can directly display the motion of the vector field by graphics and image and availably penetrate the intrinsic essence and variational law of the vector field . the visualization of vector field has been widely applied in many fields as compute hydrodynamics, aviation kinetics, atmosphere physics, weather analysis and so on
矢量场可视化是科学计算可视化中最具挑战性的研究课题之一，它以直观的图形图像显示场的运动，透过抽象数据有效洞察其内涵本质和变化规律，广泛应用于计算流体力学、航空动力学、大气物理和气象分析等领域。 - the visualization of vector fields has consistently been a challenging issue in the visualization field . it can directly display the motion of the vector field by graphics and image and availably penetrate the intrinsic essence and variational law of the vector field . the visualization of vector field has been widely applied in many fields as compute hydrodynamics, aviation kinetics, atmosphere physics, weather analysis and so on
矢量场可视化是科学计算可视化中最具挑战性的研究课题之一，它以直观的图形图像显示场的运动，透过抽象数据有效洞察其内涵本质和变化规律，广泛应用于计算流体力学、航空动力学、大气物理和气象分析等领域。 - the visualization of vector fields has consistently been a challenging issue in the visualization field . it can directly display the motion of the vector field by graphics and image and availably penetrate the intrinsic essence and variational law of the vector field . the visualization of vector field has been widely applied in many fields as compute hydrodynamics, aviation kinetics, atmosphere physics, weather analysis and so on
矢量场可视化是科学计算可视化中最具挑战性的研究课题之一，它以直观的图形图像显示场的运动，透过抽象数据有效洞察其内涵本质和变化规律，广泛应用于计算流体力学、航空动力学、大气物理和气象分析等领域。 - the visualization of vector fields has consistently been a challenging issue in the visualization field . it can directly display the motion of the vector field by graphics and image and availably penetrate the intrinsic essence and variational law of the vector field . the visualization of vector field has been widely applied in many fields as compute hydrodynamics, aviation kinetics, atmosphere physics, weather analysis and so on
矢量场可视化是科学计算可视化中最具挑战性的研究课题之一，它以直观的图形图像显示场的运动，透过抽象数据有效洞察其内涵本质和变化规律，广泛应用于计算流体力学、航空动力学、大气物理和气象分析等领域。 - language is the most important communication tool for human . in television vector field, language has always been a part of program . host for conversation program, as a medium between program and audiences, his humor, wisdom, eloquence and good words become the virtual factor
语言是人类最重要的交际工具，在电视这种传播媒介里，语言从来都是电视节目的组成部分，谈话类节目主持人做为沟通节目与观众的中介，语言诙谐风趣、机敏睿智，能言善辩、妙语连珠则成为至关重要的因素。 - the paper consists of two parts . in the first part, the definitions of zq-equivariant vector fields and the method of detection functions are stated . in the second part, a concrete numerical example of z8-equivariant perturbed planar hamiltonian system of of degree 7 is constructed, and for the unperturbed vector field having maximal number of centers, its global phase portraits are analyzed
本文由两部分组成，第一部分为综述，介绍了z_q-等变向量场以及判定函数法；第二部分首先讨论了一类7次z_8-等变的平面hamilton系统，研究了具有最大中心数时的hamilton系统可能存在的部分全局象图。 - the paper consists of two parts . in the first part, the definitions of zq-equivariant vector fields and the method of detection functions are stated . in the second part, a concrete numerical example of z8-equivariant perturbed planar hamiltonian system of of degree 7 is constructed, and for the unperturbed vector field having maximal number of centers, its global phase portraits are analyzed
本文由两部分组成，第一部分为综述，介绍了z_q-等变向量场以及判定函数法；第二部分首先讨论了一类7次z_8-等变的平面hamilton系统，研究了具有最大中心数时的hamilton系统可能存在的部分全局象图。 - from ocm layer to 30cm layer, the first rotated loading vector field in every layer reflects the anomalous soil humidity pattern in huai river basin, we call the pattern structure as " huai river pattern " . while from 30cm layer to 50cm layer, the second rotated loading vector field in every layer is also quite similar to " huai river pattern " . in the summer and autumn the " huai river pattern " is still remarkable but the feature is less prominent than that in the springtime
发现春季以30cm为界，30cm以上各层土壤湿度异常的第一旋转空间模态十分相似，其大值中心主要位于淮河流域，而30cm以下(30-50cm)各层的第二旋转空间模态与之亦十分类似，因此称该模态为“淮河型”，而夏季和秋季虽然该模态也很显著但特征不如春季突出。 - from ocm layer to 30cm layer, the first rotated loading vector field in every layer reflects the anomalous soil humidity pattern in huai river basin, we call the pattern structure as " huai river pattern " . while from 30cm layer to 50cm layer, the second rotated loading vector field in every layer is also quite similar to " huai river pattern " . in the summer and autumn the " huai river pattern " is still remarkable but the feature is less prominent than that in the springtime
发现春季以30cm为界，30cm以上各层土壤湿度异常的第一旋转空间模态十分相似，其大值中心主要位于淮河流域，而30cm以下(30-50cm)各层的第二旋转空间模态与之亦十分类似，因此称该模态为“淮河型”，而夏季和秋季虽然该模态也很显著但特征不如春季突出。