查询词典 hydraulic engineering

Experiments of flow conductivity closure stress of typical propping agent are done, propping agent short-term flow conductivity alteration index is defined, by this, the relation between fissure short-term flow conductivity and closure stress, it is close to exponential relation. 4. Establishing the mathematical simulator of hydraulic fractured well's production in a steady state, finding the relation curve between dimensionless flow conductivity and fracture penetration coefficient by means of calculation and analyses, it is the basis of hydraulic fracture. 5. Expatiating the importance of optimized hydraulic fracturing design in reservoir engineering, advancing the optimizing design method, fracture dimension can be calculated easily when the physical parameters are known. 6. Production rate decline standard curve of vertical fractured wells is achieved by mathematical simulation, when the flow pressure is certain , by asymptotic analyze, this decline curve is close to exponential relation.

完成了国内外典型支撑剂的导流能力闭合应力影响实验，在数据分析中定义了支撑剂短期导流能力变异系数，并由此发现裂缝短期导流能力随闭合应力变化的近似符合指数关系式； 4 建立了一种水力压裂井稳态产能的数学模拟器，计算分析找到了最优无量纲导流能力与裂缝穿透比之间的新型关系曲线，它是水力压裂优化设计的基础； 5 阐述了水力压裂油藏工程优化设计的重要性，提出了优化设计方法，在已知支撑剂物性参数条件下可简洁计算最优裂缝尺寸； 6 数学模拟给出了垂直裂缝井产量递减标准曲线，在井底定压条件下通过渐近分析表明，该递减曲线满足指数关系式。

In general, the design work with traditional measures is done by hand, which cannot meet the needs of the technology and manufacture. So the author has developed a CAD hydraulic design software fit for lower specific speed axial flow runner, which is easily operated by users.The main research work of this paper is as follows:1 Analyzing the main reason of axial flow power station cannot work well under littler volume of flow in some season and putting forward an improving scheme, pointing out the characters of design under abnormal factors.2 Combined with the development of the industry in our country, the abnormal hydraulic design method of propeller turbine is discussed based on present literature, data and experiment results.3 Guided by the design method of software engineering, a suit of hydraulic design software of Lower Specific Speed Axial Flow Runner is programmed by the object-oriented programming language Visual Basic and a straightforward, concise and standard Windows human-computer dialogue interface is designed for the system, which makes the operation of the system very convenient.4 ActiveX Automation technology is adopted as the interface with AutoCAD and the hydraulic drawings are edited, modified by AutoCAD until hydraulic model drawings according with the demand of engineering practice are output.5 To resolve practice problem, the author has designed a lower specific speed axial flow runner for Duowa Power Station through an example.

论文的主要内容有：1 深入分析很多轴流定桨式水电站枯水季节小流量下不能发电的主要原因，提出减容改造方案，并指出超常规条件下的改造设计特点。2 结合国情及行业发展需要，参考现有资料、文献和前人的研究成果，进行低比转速轴流式转轮叶片水力设计方法的研究，对轴流式转轮叶片的奇点分布法水力设计进行了全面的探索，结合现代计算机技术，找到了一种针对特殊条件的轴流式转轮叶片水力设计方法。3 仔细比较多种AutoCAD二次开发工具后，结合本课题的特点，选用Visual Basic语言，综合应用软件工程的设计思想，进行低比转速轴流式转轮叶片水力设计软件的编制，为系统设计了直观、简洁和标准的Windows人机对话界面，便于用户操作；编程时在考虑到设计条件特殊性的同时，尽量做到程序的通用性，使之可用于解决同一类问题；另外，大部分程序还可移植到普通轴流式转轮叶片水力设计中，具有良好的适应性。4 利用ActiveX Automation技术与AutoCAD接口，对AutoCAD进行二次开发，在AutoCAD下实现水力图的自动生成和编辑，直至输出符合实际工程要求的木模图。5 通过算例，为多哇水电站设计了一个低比转速轴流定桨式转轮，解决其在枯水期小流量下不能发电的问题。

The Company's advanced technology and equipment, detection means complete, currently has a large IF Elbow push system machine, large R bender, metal links extrusion hydraulic press, stainless steel elbow hydraulic extrusion machine, 2000T hydraulic press table big job and 1000T, 500T, etc. Four-column hydraulic press and high-power resistance furnace heat treatment, shot blasting machine, such as noisy jet pipe production equipment, is equipped with a universal tensile testing machine, chemical analysis instruments, non-destructive testing equipment, spark photoelectric read the whole spectrum, such as test equipment and test equipment , the Company has a large number of pipe fittings for many years engaged in the manufacture of engineering and technical personnel and skilled workers, with process design, manufacturing, welding, heat treatment, chemical cleaning, and product inspection and testing of the ability to undertake a variety of bend of high, medium , low pressure and high temperature and low-temperature pipe fittings manufacturing business.

本公司工艺装备先进，检测手段齐全，目前拥有大型中频弯头推制机、大R弯管机、金属三通挤压液压机、不锈钢弯头挤压液压机、2000T大工作台面液压机及1000T、500T等四柱液压机和大功率热处理电阻炉、喷吵抛丸机械等管件生产专用设备，配备了万能材料拉力试验机、化学分析仪器、无损检测仪器、火花光电全读光谱仪器等检验和试验设备，本公司有一大批多年从事管件制造的工程技术人员和技术工人，具有工艺设计、制造、焊接、热处理、化学清洗及产品检验和试验的能力，能承接各种规格的弯头的高、中、低压及中高温和低温管件制造业务。

This research will contribute to understanding the Holocene environmental change in north-eastern Tibet Plateau,as well as providing references to local hazard prevention,hydraulic engineering,and sustainable development,by reconstructing the palaeoflood history in the Guide Basin,where the upper Yellow River wriggles.

贵德盆地是黄河流域上游一个典型盆地。通过河漫滩沉积物来恢复该区古洪水的历史不仅对了解黄河上游洪水与水文气候变化有着重要理论价值，也能为现代防灾减灾和水利工程建设、可持续发展提供借鉴依据。

Company's existing range of pure imports of excavators and construction machinery machine and accessories, to design and manufacture a wide range of engineering machinery Hydraulic Component Test Bench; pressure tester; hydraulic system components and ancillary products and a wide range of engineering machinery dedicated demolishedè±.

公司现有各种纯正进口挖掘机及工程机械整机和配件，自行设计制造了多种工程机械液压元件试验台；压力测试仪；液压系统元件及辅助产品和多种工程机械专用拆卸的设备。

It is a large scale and long distance water transfer project,which is also the largest and most expensive water transfer project in the hydraulic engineering history of the united states.

该工程是一项大型远距离调水工程，也是迄今为止美国水利工程史上规模最大、费用最高的调水工程。

This paper analyzes the selection of long-distance water-supply methods in hydraulic engineering, expounds the principles that should be followed in water-supply main trunk, and selects three kinds of water transmission scheme s.

分析了水利工程长距离输水方式选择，论述了输水干线应遵循的原则，比选了3种输水方案。

Products are widely used in automobiles, motorcycles, air conditioners, air compressors, hydraulic engineering machinery, such as the sliding friction vice for connecting rod, rocker arm, steering knuckle, transmission gears, the fuel tank, frame and so round.

产品广泛用于汽车，摩托车，空调，空压机，液压工程机械等滑动磨擦副上，适用于连杆，摇臂，转向节，变速箱齿轮，油缸，支架轮等。

Research on anastomosing river is in great demand of the geomorphology, hydraulic engineering and sedimentology.

网状河流作为一种新的冲积河流类型已经引起地貌学家、水利学家和沉积学家的关注，成为河流地貌领域、河流沉积领域以及河流水动力领域的研究热点之一。

Through measuring the slump, air content, strength and frost-resistance ability of this concrete, the paper testifies its practicabilities for application in hydraulic engineering.

配制高抗冻混凝土并将其应用于工程实践中，测定其坍落度、含气量、抗压强度和抗冻性，验证该混凝土的实用性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。