下模

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。

Modal parameter identification ERA method of source code, The method can be used for environmental inspired modal parameter identification.

模态参数识别ERA方法的源代码，可利用该方法进行环境激励下结构模态参数识别。

Given the incompressibility of water, a relation between specific elastic storage, compressibility modulus and deformation modulus was inferred by applying current related formulas.

主要完成了如下工作：(1)在假定水不可压缩的情况下，利用已有的相关公式推导了单位弹性释水系数与土层压缩模量、变形模量之间的关系。

Based on the fracture mechanics approach, the finite element method analyzed a varity of the stress intensity factor at the pavement crack tip when setting fiberglass-polyester paving mat, and the effect of the stress intensity factor in symmetric load and asymmetric load was studied when the asphalt layer modulus, thickness of semi-rigid base, the the depth of the crack, touch condition, interlay modular, etc., changed.

基于断裂力学的方法，采用ANASYS软件模拟沥青路面典型结构，分析了设置聚酯玻纤布夹层后，在正载和偏载作用下，裂缝尖端应力强度因子的变化，研究了沥青层模量、基层厚度及裂缝扩展深度等结构参量及层间接触条件和夹层模量对应力强度因子的影响规律分析结果表明，设置聚酯玻纤布夹层，可以有效防治荷载型反射裂缝的扩展。

In the measure amplification circuit, direct-current or low frequency signal come from a common sensor , conveying in only rhyme fashion way after amplification, In typical situation, serviceable signal maximum amplitude probable only have a certain number or amount millivolt, but common mode noise suppression may be up to several volt, as a result it is significant to the factor of the amplification input drift and noise etc for total precision, the amplification in itself common mode restraints features is also equally binding problem.

在测量用的放大电路中，一般传感器送来的直流或低频信号，经放大后用单端方式传输，在典型情况下，有用信号的最大幅度可能仅有若干毫伏，而共模噪音可能高到几伏，故放大器输入漂移和噪声等因素对于总的精度至关重要，放大器本身的共模抑制特性也是同等重要的问题。

A modal value analysis method is presented to obtain a reduced-order dynamic model with modal coordinates for structures with small damping or without damping.

针对小阻尼和无阻尼结构，提出了一种模态价值分析方法，用于在模态坐标下的动力学模型降阶问题。

In chapter 3, we study monatomic chain with power-law long-range interactions and get non-propagating intrinsic localized mode in other wave-vector as well as that in the boundary of the phonon Brillouin zone.

第三章研究了长程关联作用下的单原子链中，不仅仅在Brillouin边界处存在非传播的内在局域模：而且 Brillouin边界之外也存在非传播的内在局域模。

We find that when the two input modes are classical states, there is no entanglement produced at all; but even both of the two modes are nonclassical, there is no entanglement under certain condition.

我们发现，当输入的两个模都是经典态时，不会有纠缠产生；但即使两个输入模都是非经典态，在一定条件下，也不能产生纠缠。

Under the condition that the maximum index change at the core-cladding interface and absorption coefficient were constant, the numerical results indicated that the reflectivity of cross-mode coupling peak between LP_ 01 and LP_ 11 modes varies parabolically with the saturation length of index change.

仿真结果表明，在纤芯和包层边界的最大光致折射率变化量和纤芯吸收因子不变的情况下，随着纤芯折射率变化的饱和长度的增大，LP01和LP11模间的互耦合反射峰呈抛物线形变化，当饱和长度增大到一定值后，互耦合反射峰随饱和长度的增大而逐渐减小并最终消失；同阶LP模的自耦合反射峰随饱和长度的增大而增大。

The paper calculates and analyses an coupling oscillating mode trait of chute -flow-dam body and the dynamic stability of the chute of overfall concrete face rockfill dam by using ANSYS finite element software and the theory of fluid-solid coupling.

采用ANSYS有限元软件和流—固耦合理论[1，2]，计算、分析了溢流混凝土面板堆石坝的泄槽—水流—坝体的耦合振动模态特性和泄槽动力稳定性，同时应用随机振动理论对脉动压力作用下的泄槽及地基的动力响应作出了定量估算，与原来的双渐方法的结果进行了比较，验证了计算结果的合理性，进而分析了坝体动弹模和堆石厚度对系统动力特性的影响。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。