查询词典 method of difference

If the neighborhood of equation solution is solvable and meets the point- by-point Lipschitz condition, stable boundary could be obtained as the convergence of the difference method is realized, and thus the stability is ensured.

方程解的邻近如果可解并具备逐点Lipschitz条件，则差分法收敛必有稳定界存在，从而差分格式收敛性保证其稳定性，因此可以放弃线性这一重要条件。

The main study areas are as follows: 1 The landscape classification system of the urban-rural ecotone is set up based on the studying on land-use type of urban area and rural area, and then it is used to establish a regional landscape data warehouse for deposition, modification and management; 2 A group of landscape structure and pattern indices and patch area spectrum analysis methods are used to describe the structural and heterogeneous characters of all the landscape elements from different aspects; 3 The temporal and spatial difference of the landscape pattern of main road belts of the research area are also analyzed with the same method. Their basic process and regularity of urban axial expanding of the southwestward of Shanghai City are initially knewn well; 4 According to the traits of the ecotone, the principles and basis of vegetation classification, the ecotone vegetation classification system is set up, its species constitute, community patch characters, the relationship between vegetation types and landscape categories are analyzed, meanwhile, the vegetation sample maps are made; 5 Based on above studies, some landscape ecological stratedies within the research area were discussed. The following are the results of this study

城乡交错带地区的景观分类，在对城市地区和农村地区的土地利用类型研究的基础上建立了城乡交错带的分类体系，并在此基础上用ARC＼INFO软件分时段、分区、分要素建立研究区的景观图形数据库，对数据进行存储、修改和管理；2）利用多种景观结构、格局指数和斑块面积谱分析方法，从不同的侧面对各种景观组分的结构以及区域的景观格局特征进行了分析，并对其成因进行了探讨；3）利用相同的分析方法，分析了城乡交错带中的城市干道两侧的景观格局特征的空间和时间分异情况，初步掌握上海城市西南轴向扩张的基本过程和规律；4）对城乡交错带中非独立的景观要素-植被，研究其遥感图象信息的基本特征，建立适合区域特点的植被分类体系，并在样区中建立了植被图形数据库和计算机制图，分析了植被景观种类组成、斑块等级等特征以及与不同景观的相互关系；5）在上述研究的基础上，对研究区内的景观生态对策进行了研究。

The seasonal division and their change in various Sichuan areas is discussed using the daily mean temperature data of Sichuan 135 stations and the seasonal division method by Zeng Qingcun et al. It is shown that:(1) Between 1961-2004 each seasonal length is different, summer and winter are longer than spring and autumn, and difference of the seasonal division in different areas is mainly shown by the time scale of spring and autumn.

利用四川地区135个台站的逐日温度资料和曾庆存等提出的季节划分方法，讨论了四川各区域的气候季节划分和季节变化，结果农明：(1)1961~2004年期间，四川地区季节的四季分配很不均匀，冬夏季偏长，春秋季节偏短；并且四川不同区域间的季节划分差异主要表现在春秋两季的时间长度上。

Reach between different to the occasional of different power source bear be opposite between power source and bear the uses share difference of same spur track, raised dynamo and negative charge the method that equipment of common share transmit electricity uses share.

对不同电源之间或不同负荷之间及电源与负荷之间对同一支路的利用份额的差别，提出了发电机和负荷共同分摊输电设备利用份额的方法。

In order to compare the difference of antibiotic resistant model between two pig farms,antimicrobial susceptivity test were carried out to Escherichia coli by using the Kirby-Bauer method recommended by National Committee for Clinical Laboratory Standards.

按照美国临床实验室标准委员会推荐的Kirby-Bauer药敏纸片法，对从2个猪扬分离到的大肠杆菌进行了17种抗菌药物的敏感性测试。

To effectively reconfigure General Bill of Material, reconfiguration process of GBOM based on data-mining was proposed. BOM instances were represented by the weighted unordered tree graph generally, and the algorithm of similarity measurement between two similar BOM instances were presented based on the minimum weighted symmetric difference. In terms of the results of the similarity measurement, all the typical BOM instances were clustered based on the k-Means clustering method.

为有效地重构新型的通用物料清单，提出了基于数据挖掘的通用物料清单重构过程，运用赋权无序树形图表示产品物料清单实例，基于最小赋权对称相异度给出了相似物料清单实例之间的相似度度量算法；基于物料清单实例之间的相似度度量结果，采用k-Means聚类方法对物料清单实例进行聚类。

Chapter 2 proposes a fast GME method based on the principle of the symmetry elimination and difference of motion vectors to reduce the computational complexity of global motion estimation.

第1章绪论部分首先阐述了选题的意义，然后对国内外研究现状进行了综述并作了相应的总结，最后介绍了本课题的主要研究内容和论文结构。

To reduce the computational complexity of Global Motion Estimation, a fast GME method based on the principle of the symmetry elimination and difference of motion vectors is proposed.

摘要该文针对全局运动估计计算复杂度过高的问题，提出了一种基于运动矢量对消和差分原理的快速全局运动估计方法。

The finite difference method is applied to reduce the system of partial differential equations to ordinary differential equations.

采用有限差分方法，将由偏微分方程组描述的空间连续系统约化为由常微分方程组描述的空间离散高维动力系统。

For the phase compensation method reported in the reference, The inconsistency between the period of tangent function and that of phase difference produced by LC layer leads to confusion in the measurement result.

在位相补偿法测量液晶层厚度的方法中，正切函数的周期与液晶层产生的位相差周期不一致，出现同一厚度与两个测量值对应的情况。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。