查询词典 characteristic

Moreover,it is necessary to improve non-load magnetization characteristic of medium voltage transformer and choose the one with superior volt-ampere characteristic in design and manufacture process.

同时，在产品设计制造时应着力改善中压互感器的空载励磁特性，选择伏安特性优越的中压互感器。分析结果为改进产品设计、提高制造工艺水平和优化运行维护提供了科学依据。

The geology research of carbonate reservoirs in Ordovician of Tahe oilfield showed that many large dissolved vugs and fractures were developed. The spread of the reservoir take on a very heterogeneous state. And the typical fractured-vuggy reservoirs was formed. According to the combination of the various spaces, the formation was divided into vuggy formation, fractured-vuggy formation and fractured formation. The research showed that development of the vug is relevant to the its position on the structure, the fractures, the water surface and the weathering surface. Multi-phase charge and recharge of the oil in the reservoirs resulted in the complexity of the fluid distribution. So the"Bottle Model"was brought forward to explain the movement of the water-oil contact. The special storage space and the complex fluid distribution lead to the unstability of the production and the complexity of the water cut. In order to explain the characteristic of the fracture-vug unit was brought forward and the basic principle and method of the partition of the fracture-vug unit was formed. The classification and evaluation of the units were performed according the reserve and energy. Based on the research of geology characteristic and the fluid flow in the reservoir the comprehensive numerical simulation plan of the fractured-vuggy reservoirs were established. Through the selection of the simulation unit, fluid flow type and parameter equivalent the triple media reservoir simulation model was established. Considering the practical application the model was resolved by the DKR decomposition conjugate grads method. Based on the fine reservoir description of Dsitrict IV of the Tahe oilfield the various space type were classified and combined together. The geology model of Unit S48 was constructed. Two typical single well model was established according to the geology and the dynamic phenomena. Finally the single well model and the Unit S48 were simulated by the triple media reservoir simulator. Via the local grid refinement and coarsening in the simulation good matchs were gained. Based on the results of the simulation the reserve distribution, percent of reserve produced in various space and the natural energy were analyzed. The fluid was storaged in the fractures and vugs mostly and more than 90% the produced oil came from the systems. The energy belonged to the active one. The results of simulation accorded with the fact and showed the validity and practicability the research and the simulator.

塔河油田奥陶系碳酸盐岩油藏的地质研究表明，其储层中发育着很多大型的溶蚀洞、缝，储层的平面展布呈现出极度的非均质性，形成了典型的缝洞型碳酸盐岩油藏，根据各种孔隙介质在储层中的组合，将储层分为了溶洞型、裂缝-溶洞型和裂缝型三类；研究表明溶洞储层的发育和构造位置、裂缝的发育、潜水面和风化面的位置等因素有关；多期充注的油气成藏模式导致了流体复杂的赋存状态，由此提出了所谓的"瓶子模型"，解释生产过程中油水界面的变化；特殊的储集空间类型和流体分布特征导致油田在开发过程中表现出很大的不确定性和含水变化的复杂性，为了合理的解释油气田开发过程中的动态特征，提出了"缝洞单元"的概念，并制定了"缝洞单元"纵横向划分的基本原则和依据及划分方法，并对"缝洞单元"进行了分类和评价；基于地质特征和流体在其中流动规律的研究，提出了缝洞型碳酸盐岩油藏的数值模拟综合解决方案，通过模拟单元的选择、流动类型和参数的等效，建立了三重介质油藏三维三相数值模拟模型，采用不完全LU分解预处理共轭梯度法进行了求解；在塔河油田4区精细油藏描述的基础上，将各种类型的孔隙空间进行了归类组合，建立了S48单元的地质模型；通过对油井生产动态进行分析研究，建立了两类和油井地质、生产动态相对应的单井模型；最后应用三重介质油藏数值模拟软件对单井模型和S48单元进行了数值模拟，通过局部加密和粗化等技术模拟流体流动规律，取得了很好的拟合效果；结合数值模拟结果，分析了各种介质中的储量分布、储量产出的百分比以及地层的能量，认为塔河油田缝洞型油藏中流体绝大多数储集于缝洞系统之中，所产出流体90%以上也来自于缝洞系统，其底水能量属于较充足的类型；模拟结果和油田实际情况符合较好，说明了地质研究和油藏数值模拟研究的正确性。

First this paper analyzes and clarifies the statistical investigating data of winter migrant birds in Poyang lake in many years, and selects 44 samples on behalf of the main lake, this paper analyzes the birds community characteristic of abundant, variety, even, dominant and the meeting rate among the plant; this paper selects 10 environmental elements according to the reality of Poyang lake and selects the characteristic bird among rare plant, normal plant, wading bird, swimming bird etc, and.

本文首先通过对环鄱阳湖地区越冬候鸟多年调查统计数据的梳理和分析，筛选44个具有代表性主要湖泊作为样本，分析了各湖候鸟群落的丰富度、多样性、均匀性、优势度和种间相遇机率等特征；根据鄱阳湖实际选取10个环境因子，从稀有种、常见种、涉禽、游禽等方面结合选择具有代表性候鸟，进行了候鸟与湿地环境因子的相关关系分析。

Due to the moving base existence of the minehunting and the frame structure characteristic of the sonar array,a new modeling thought in which the boat body coordinates is regarded as moving coordinates and the whirligig equation of sonar array compared with the self coordinates is founded on the basis of the Eulers theorem and the coordinate transform is introduced. The dynamic equations of minehunting sonar array with the state matrix form are founded by settling the dynamic models with the vector form. So it offers theory foundation for analyzing the dynamic characteristic and designing robust control.

由于猎雷艇作为动基座的存在和声纳基阵的框架结构特点，提出了以艇体坐标系为运动坐标系，运用变形的欧拉定理和坐标变换建立声纳基阵相对自身坐标系的旋转运动方程的建模思想；将所建立的矢量形式的动力学模型展开整理，获得了状态矩阵形式的猎雷声纳基阵动力学方程，为系统动力学模型的实用化奠定了基础。

Focuses on the characteristic of YASS' random embedding, this pap er studies the locaton of embedding blocks using the characteristic of YASS' random embedding, and finds out that the YASS' embedding processing will have an impact on JPEG images' statistical property.

本文针对YASS隐密术随机嵌入的特点，研究了YASS嵌入数据的位置分布。同时，分析了信息嵌入过程对JPEG图像数据统计特性的影响，提取了多个有效的特征，结合秘密数据的分布概率，设计出一种有效的专用型隐密分析算法。

A fluidized drying method was used to research the drying characteristic of zymotic orange peels, and a experimental equipment of fluidized drying bed was built, the influence to the drying characteristic of drying parameters such as air temperature, air velocity, particle diameters, the height of bed layer and the initial moisture content etc, are analyzed.

采用流态化干燥方法对发酵柑橘皮渣的干燥进行实验研究，建立一个小型的流化床干燥试验台，分析了各干燥参数如风温、风速、颗粒粒径、床层高度以及初始含湿率对发酵柑橘皮渣干燥特性的影响。

The characteristic of ABR is change water power characteristic and to improve the term of mass transfer in the reactor in order to increase the reaction velocity; and increase alkalinity to improve the capability of abirritation of the system through add Na2CO3 to reaction and a optimal pH condition which fit to acidic bacterium come into being. In result, the organic matters are removed efficiently in system.

异波折板水解酸化反应装置最大的特点是改变了水流特征，改善反应装置内酸化菌与基质之间的传质条件，以加快反应速率：同时在反应装置内加入碳酸钠，碳酸钠溶液作用在于提高反应装置内废水的碱度，增强系统的缓冲能力，把pH值控制在适合酸化菌生长的范围，充分发挥微生物的活性，使系统的有机去除能力大大提高。

Myocardial fibrosis is characteristic by excessive fibrous tissue accumulation, collagen contents or ratio alteration in heart tissue. The abnormal collagen accrementition is the characteristic pathological change in viral heart disease including acute and chronic myocarditis and partial dilated cardiomyopathy.

心肌纤维化是指心肌组织中胶原纤维过量积聚或胶原成分和/或比例发生变化，是病毒性心脏病(包括急、慢性心肌炎和部分扩张型心肌病)的特征性病理表现。

The soil had the alkalize characteristic, and the decisive factors were terrain, texture and precipitation, so before the haloxylon ammodendron settled down, the soil had the alkalize characteristic, and the haloxylon ammodendron was alkali-resistant plant, but if the total alkalinity excessively high, the haloxylon ammodendron also grew difficulty.

土壤具有碱化特征，主要是由地形、质地、降水等结构性因素决定的，由此得出荒漠植被梭梭定居之前土壤就具有了碱化特征，梭梭是耐碱性荒漠植被，但总碱度过高的区域梭梭也难以生长，因此土壤酸碱度仍然是该区域影响梭梭生长和分布的重要因子。

CAN bus has been the most promising fieldbus and it has been widely used in many areas, but with the increasing of complicacy in automation systems for industrial controlling, people have more and more strict requirement to the real-time capability of information, So it is very important to study the real-time characteristic of CAN protocol for surmounting the limitation of aptotic priority in CAN protocol by taking effective measures and improving the real-time characteristic of communication system based on CAN bus.

CAN总线是目前最有前途的现场总线之一，它已经在多个领域得到了广泛的应用，然而随着工业控制自动化系统复杂性的增加，对信息实时性的要求越来越高，因此，研究CAN协议的实时性问题，采取合理的措施克服CAN协议中固定优先级机制的缺陷，提高CAN总线通讯系统的实时性具有重要的应用价值。

The United Kingdom has pledged to provide technical assistance to the peacekeeping effort in Darfur, including airlifting supplies and equipment to assist the African peacekeepers.

英国承诺为达佛的維和努力提供技术帮助，包括提供非洲的維和部队空运补給和裝备。

Results: The level of ET-1mRNA in placental villus was significantly higher in pre-eclamptic women than that in control group.

结果：妊高征组患者胎盘绒毛组织ET-1 mRNA的表达较正常妊娠组明显增高。