For overcoming nonsmooth of temperature field , temperature field equations in subdomains are built respectively in rectangular coordinate and in cylindrical coordinate . based on the numerical simulation algorithm in this paper , numerical results for temperature field are given and analyzed 基于我们构造的三维温度场数值模拟算法，给出了变压器运行过程中温度场在空间与时间分布的数值结果，并对所得到的数值结果进行了分析。
In this paper , we shall study the dependability of consecutive - n - 1 - out - of - n : g repairable system under the following respective assumptions : firstly , it is assumed that the life distribution and the repair distribution of each component are exponential distributions 本文对于n中取连续n - 1好系统分别在下述假设下进行可靠性研究： 1 ：系统中的故障部件不可以修复如新，部件的寿命分布和维修时间分布均为指数分布，关键部件优先维修。
This article tries to analyze the time distribution , subjects distribution , authors distribution and journals distribution of papers on library spirit from 1988 to 2005 by using statistical method in order to discuss the research actuality and the future 本文采用文献计量方法对1988 - 2005年我国“图书馆精神”研究领域的论文进行时间分布分析、主题分布分析、著者分布分析和期刊分布分析，从而探讨“图书馆精神”研究发展状况与未来发展趋势。
After studied the temporal pattern of the 137cs deposition flux , it is fist to discover that the temporal distribution of the 137cs fallout is very similar to weibull probability distribution . the 137cs fallout can be simulated by weibull probability distribution , which can be employed to estimate the rate of soil erosion 通过分析~ ( 137 ) cs沉降的时间分布特征，发现~ ( 137 ) cs沉降的年际分布与weibull概率分布相似，可以用weibull概率分布模型进行拟合。
When the data of logistics in current process are used for input of simulating logistics in future 100 % continuous casting process , supply of hot metal from iron - making process may not satisfy the needs of 100 % continuous casting on raw materials . because planning scheme in continuous casting process depends greatly on smelting scheme in convertor vessel , it is important for operator to balance raw materials supply , smelting and casting in order to realize the scheme of 100 % continuous casting . when some equipment are work abnormally , mixer of hot metal and lf furnace can be used for logistics buffer 用攀钢炼钢生产数据对仿真软件系统进行的测试和仿真研究结果表明：仿真系统的随机数发生算法可以实现对作业时间的依分布随机抽取；在相似的输入条件下，仿真结果与实际生产物流的时间分布规律基本吻合，达到了仿真软件设计的预期目标；若以攀钢提钒炼钢厂现工艺的铁水输入作为全连铸后的输入条件，则现工艺的物料供应能力可能难以满足全连铸生产的要求；连铸机的连浇计划对转炉炉次计划的编制有很高的要求，合理安排来料、炼钢与浇铸三者间的物流平衡关系将是保证全连铸作业的重要条件；当出现设备异常情况时，可以利用混铁炉与lf炉站前等待作为物流缓冲池，通过延长系统的平均物流时间来缓解因设备检修和故障等扰动所造成的影响，确保生产的顺利进行。
The thesis consists of five chapters : in chapter one , the author firstly makes a summary on the related progress in the area of tourist environmental carrying capacity and tourist flows ( mainly about demographic characteristics and temporal characteristics ) research both at home and abroad . and then , he introduces the research background , main contents , research methods and data source 第一章首先综述了国内外关于旅游环境容量和旅游客流特征(主要为旅游客流的人口学特征和客流时间分布特征)研究的进展，然后阐述了本文的研究背景、研究内容、研究方法和数据来源。
Through statistics and analysis of fluid a nomaly characteristics , this paper obtained the time distribution characteristics of fluid a nomaly of the moderately strong earthquakes , especially those with intensity v , earth quakes in beijing and its adjacent area , and summarized the leading time of each phases anomaly before the earthquakes , which can be regarded as index of occurrence time of earthquakes 通过对流体异常特征的统计分析，给出了北京及邻近地区的中期、中短期、短期和短临异常的时间分布特征，并对地震前各阶段异常的超前时间进行了总结，该时间可作为发震时间的预测指标。
At the same time , the author briefly analyses the distribution of original provinces , tourism motives and tourism purposes about these domestic tourists . in chapter five , taking xidi village and hongcun village for examples , based on lots of statistical data , the author summarizes the temporal characteristics of tourist flows to ancient villages and makes a comparison with others . he also discusses the reasons affecting it , such as events , social factors , natural environmental factors , radiating effect of mt 第五章以西递、宏村为例，在大量旅游客流统计数据的基础上总结出古村落旅游客流时间分布特征；从事件、社会因素、自然环境因素、黄山的辐射效应、管理体制及经营管理水平等方面对西递、宏村客流时间变化的影响因素展开深入探讨；文章进一步讨论了不断攀升的客流所带来的影响，并提出了相关建议与对策。
In the research realm of the target identify , an important topic is to minish the laser radar cross section of the space target for target stealth . the laser radar probes a target is based on the target under the laser , the space and time distribute characteristic of the strength ? polarization and phasic of the laser scattering etc . to identify a target 在目标识别研究领域有一个重要的课题是减小空间目标的激光雷达散射截面便于目标隐身。激光雷达探测目标是根据目标在激光照射下,激光散射的强度、偏振和相位等的空间和时间分布特征来识别目标,目标表面粗糙度是影响目标激光散射特性的重要影响因素。
In the paper , using the cg lightning data obtained from shandong lightning detection network in 1998 - 2002 , the cg lightning spatial and temporal characteristic is analyzed systematically . the result shows that negative cg flashes predominate in total cg lightning , and negative lightning is about 6 times as much as positive one 本文利用山东省雷电探测网1998 - 2002年获取的地闪资料，对山东省的云对地闪电的空间和时间分布特征进行系统分析，得出了山东地区地闪的气候特征：云地闪电中负闪占绝大多数，负闪是正闪的6倍多。
