查询词典 composite functor
- 与 composite functor 相关的网络例句 [注:此内容来源于网络,仅供参考]
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After analyzing the merit and lack of 9I model, the main idea is proposed: to distill some basic topological relations from 9I model, of which the composite topological relations of complex objects are made up. In detail, the composite topological relationships between region and region, line and line, line and region are particularly discussed;(2)Analyze the characteristics and inner relations of cadastral features. According to the expressional model of complex topological relations, the author discovers the possible topological relations between parcels, parcel lines and parcel points. In addition, sum up the general topological relationship rules of cadastral data.(3) Then the topological relations model is extended to the spatio-temporal data. Time in cadastral database and change semantic are discussed. It's redefined that spatio-temporal topological relations is composed of time, location, status and event relation. Spatio-temporal topological relationships can be represented by extended 4I model. Taking cadastral parcels as example, there are different possible spatio-temporal topological relationships between parcels when they are extended, shrunken, split, merged or others. Thus, some deductions are drawn that, for example, if parcels have be coexisting for some time they are impossible to be overlapped. Furthermore, the parents of parcels alternated and their possible change types can be detected by their spatio-temporal topological relationships.(4) Before carrying out the experiment, the calculation method must be designed.
具体研究工作及成果如下:(1)根据点集拓扑理论中与拓扑空间相关的概念,本文对空间的点、线、面进行了重新定义,以区分对象的复杂性;分析了9I模型在表示简单对象方面的优点,以及在表达复杂对象上的不足,阐述了本文的研究思路和解决方案,并以复杂的面面、线线和线面为例详细探讨了复合拓扑关系的表达方法;(2)分析了地籍权属数据和地类数据的内涵、特点和要素之间的联系,根据复杂对象的拓扑关系表达模型,本文讨论了宗地、界址线、界址点之间,图斑、线状地物、零星地类之间可能存在的拓扑关系和形式化表达方法,归纳总结了地籍对象的拓扑关系满足的约束性规则;(3)将拓扑关系的研究延伸到时空领域,从地籍对象的时态性出发,本文阐述了地籍数据中时间的含义和变化语义描述的需要;从时间、位置、状态、事件等之间的拓扑关系方面,重新系统性地进行了时空拓扑关系的定义;研究了一维时间和二维空间的集成表达方式,以宗地、界址线为例,分析了变更前后不同时间区间里可能的拓扑关系,探讨了时空拓扑关系对时空变化操作类型和变化语义的推理方法和意义;(4)为实现空间拓扑关系的查询分析等应用,本文研究了空间拓扑关系的计算方法。
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As an example, the time series of China composite stock index is considered Firstly, the distribution of five days return on China composite stock index is studied. Secondly, based on the R/S analysis Hurst exponent is worked out and determination detecting can be done . Lastly, the topological characteristics such as correlation dimension and maximum Lyapunov exponent are extracted from time series.
作为例子,本文对中国股票指数时间序列做了实证分析,首先研究了中国股票指数的五天收益率的分布规律,然后运用重标极差分析方法计算出赫斯特指数,并以此为基础进行确定性检验,最后在相空间重构的基础上提取吸引子的拓扑特征指数。
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The property of PP/carbon black conductive composite and the effect of toughener POE on the property of the composite were studied.
研究了炭黑填充聚丙烯导电复合材料的性能以及增韧剂对其性能的影响。
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In order to study the effect of web openings on the behavior of composite beams under negative moment ,three perforated and one unperforated cantilever composite beams were designed and tested.
为研究腹板开洞对负弯矩区组合梁受力性能的影响,对三根腹板开洞外挑组合梁和一根对比梁进行了试验研究,考虑是否开洞、洞口大小、洞口补强等参数的影响。
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The deformation mode of pile body composite foundation is systemic studied. The solution of stress and displacement of two-layer elastic continuous body is built under vertical load of axisymmetric, elastic upper space body and circle axisymmetric. Compress deformation of underlayer of cement fcy-ash gravel pile composite foundation is analyzed.
比较系统的研究了桩体复合地基变形模式;推导建立了轴对称空间体、弹性半空间体、圆形轴对称垂直荷载下的双层弹性连续体系的应力与位移的一般解;对水泥粉煤灰碎石桩复合地基下卧层的压缩变形进行详细的分析。
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Plastic is used by the companies jointly developed by the Nanjing University with a new Plastic Composite Pipe plastics, poly vinyl alcohol, which added some 20 new materials greatly reduces the linear expansion coefficient of plastic. so in the steel and plastic composite materials to ensure the reliability.
公司使用的塑料是公司与南京大学联合研制的一种新型钢塑复合管专用塑料,以聚乙烯为母体,在里面添加了二十几种新材料,大大降低了塑料的线胀系数,从而在材料上保证了钢与塑复合的可靠性。
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The polyacrylate-/vinylidene chloride/nanomontmorillonite Composite emulsion was prepared by seed emulsion polymerization.The influence of the content of nanomontmorillonite on composite emulsion diameter ,mechanical properties and thermal stability is probed.
以偏二氯乙烯和蒙脱土作改性剂,采用种子乳液聚合方法制备了聚丙烯酸酯偏二氯乙烯/蒙脱土共聚物复合乳液,研究了蒙脱土质量分数对共聚物乳胶粒径、乳胶膜抗拉强度与断裂伸长率及热稳定性的影响。
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The company has domestic advanced production lines of a composite four, three composite production lines, two single-extrusion production line, air-conditioning pipe production line 2, and another flat-panel vulcanizer 30 Units, the annual production of 6,000,000 meters seal, hose 500,000 meters.
公司拥有国内先进的四复合生产线一条,三复合生产线两条,单挤出生产线两条,空调管生产线二条,另有平板硫化机30台,年生产密封条600万米,胶管50万米。
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In this paper, through adding different content of calcium carbonate, wollastonite and talcum powder into the composite system, I have studied the mechanics performance and the interface mechanism of the composite system.
本文分别选择碳酸钙、硅灰石、滑石粉对聚丙烯进行不同配比的添加,对各自的力学性能和界面机理进行了研究。
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Maleic rosin has been added to the surface of wood flour in the form of monoester, i.e., the formation of esterified wood flour bearing a pendent carboxylic group. The rheological study showed that the complex viscosity η(superscript *, storage modulus and loss modulus of WF-HDPE composites decreased firstly and increased afterward and declined lastly as the dosage of maleic rosin increased, however, the viscosity of the composite melts decreased as a whole. After the modification of wood flour, the rheological properties of composite melts were improved markedly. According to the mechanical test it was indicated that, by proper treatment of wood flour with maleic rosin, the tensile strength and flexural strength of WF-HDPE increased obviously.
WF-HDPE流变学研究表明:复合材料的复合黏度η(上标*、储能模量和损耗模量随马来松香用量的增加先减小后增大最后减小,但体系的黏度和模量总体呈下降趋势,木粉经马来松香改性后复合熔体的流变性能显著改善,这不仅有利于提高复合材料的成型加工效率,而且适当的马来松香处理也能够提高复合材料的拉伸强度和弯曲强度,后者被静态力学试验结果所证实。
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- 推荐网络例句
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Panorama Many people are dancing in a large sitting room.
在一个大客厅里,许多人在跳舞。
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We fully understand how a microwave oven cooks food, it is first necessary to talk ...
我们充分理解一个微波炉煮的食物,这是首先要谈。。。
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The age of the patient is, therefore, almost equivalent to the duration of HBV infection.
因此患者的年龄几乎与乙肝病毒感染的病程相似。