参考系统

The dual channels AD converter AD9238-40 was used as input stage,two asynchronous FIFOs on-chip were used as high-speed buffer memory,and the sampling and adaptive filtering was controlled by FPGA.

仿真结果表明：该方案既能降低系统的成本，又能有效降低高频可能引起的干扰，对于高速实时电路处理具有一定的参考意义。

The calculation method is useful to the design of high-speed jacquard machine transmission shaft and the analysis of other complex rotor system.

该分析计算方法对其他类型提花机主轴的设计及类似的复合转子系统的动态特性分析具有较好的参考价值。

The findings presented in this dissertation are of significance to the design of high-speed wireless systems.

本文的研究为高速无线通信系统的设计提供了一种参考。

This thesis also provides comprehensive technical document and corresponding reference for design of homologous MIS system.

为下一步的开发提供了较全面的技术文档。并为类似的MIS系统的开发和设计提供了相应的参考。

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 operating process of liquid apogee engine (N2O4/MMH) thrust chamber is studied. By applying the SIMPLE algorithm with staggered grid, the numerical model is established. The atomization mechanism and decomposition combustion of hypergolic rocket propellant are considered in the model.

研究了远地点发动机(N2O4/MMH)的推力室工作过程，考虑了自燃推进剂的雾化、蒸发以及化学反应流动过程，采用交错网格系统的SIMPLE算法，得到了不同边区冷却流量对推力室的内流场和燃烧效率的影响结果，数值计算的结果与理论分析相符合，为推力室工作过程的稳定性分析提供了重要参考。

Use of IC card issuers fountains in the system, and a software program to provide interested persons reference.

使用IC卡的饮水机发卡系统软件程序，提供有兴趣了解的人参考。

The results provide some references for the design of X-ray pinhole imaging system.

本文结果对X射线源针孔成像的系统设计具有参考意义。

Hope the data in this research can significantly help those who imperatively need to implement Enterprise Resources Planning.

希望本研究的整理资料，可以提供给有同样迫切性需要导入企业资源规划系统的相关企业，作为规划以及执行上的参考。

This paper analyses several factors which affect the highlighting effect of organic materials with Monte Carlo simulation method, including energy of the incident ray, dimension of the target material, dimension and position of detector, working mode of detector.

本文通过蒙特卡罗仿真方法，分析了影响有机物加亮效应的若干因素（包括入射射线能量、被检物体尺寸、探测器大小与位置、探测器工作方式），为背散射成像系统设计提供了参考。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新