多重点

In the past,there are contradictions in the process of mechanical drivage existing between the rapid process of construction and the difficulty of transportation of materialeg.

过去，机械化掘进施工中一直存在着施工进度快与运料难(环节多、隐患多、速度慢等)之间的矛盾，导致生产效率低，为解决这一矛盾，本文将介绍一种安全、高效的方法———皮带机运料，重点介绍技术改造方法及相应的安全技术措施。

Based on theories of multiphase fluid mechanics and mine ventilation theories,the model of drivage tunnel was established by using the method of similar experiment,the characteristics of ventilating current and gas concentration distribution in drivage tunnel were studied by the experiment,and based on the above characteristics the flow characteristics of gas transportation multiphase flow field were majorly analyzed.

基于多相流及矿井通风理论，利用相似性实验方法，搭建了煤矿掘进巷道模型，并通过模型实验获得了掘进巷道内风流流场和瓦斯浓度分布场的特征信息。结合上述两方面的特征信息重点分析了巷道内瓦斯运移多相流场的流动特性，所采用方法对于矿井通风系统及瓦斯监测系统的设计具有较强指导意义。

The total savings to the county forest up to 20 billion cubic meters, the country's largest contiguous area of more than 11 million mu of natural secondary forest hystrix forest areas are classified as state protection, 20 million mu of bamboo forest and rich resources Mans series.

全县森林总积蓄量达20亿立方米，全国连片面积最大的11多万亩天然次生红椎林被列为国家重点保护林区，有20多万亩竹林和丰富的芒编资源。

The focus of this paper is to make an outline of the first part of the book, 'pistémologie analytique ou descriptive'', in contrast with Thomas Aquinas's original text.

本文的重点在於根据汪斯坦博根《知识论》的第一部分「分析或描写的知识论」，加以浓缩其要点，并试图就部分重要论点和多玛斯的原始文献加以比对，以彰显汪斯坦博根与多玛斯在知识理论上前后辉映的旨趣。

Highlights include: the influence of traditional Guaraná building practices on the construction of housing in Villa Formosa; mission buildings both in the Cono Sur and in Alta California; photographic essay of the architectural styles found in Coporaque, Pirayo, Bridgetown, Villa de Leiva, Totora, and Maldonado; architectural preservation in the northwest of Argentina.

重点包括：传统的影响，瓜拿纳建设做法对建设住房别墅福尔摩沙；团建筑物在Cono Sur和在阿尔塔加利福尼亚州；摄影散文的建筑风格在Coporaque， Pirayo ，布里奇敦，镇莱瓦，托托拉和马尔多纳多；建筑保存西北阿根廷。

Many new detection techniques are proposed, that include: To overcome the faults of cross-terms and short unambiguity range for the common Wigner-Ville Distribution , short-time Fourier transform and Gabor transform are applied to SAR moving target detection. To improve the detection performance of WVD in noise environment, a new technique based on the Cross-WVD is proposed. The application of fractional Fourier transform to chirp signal detection is analyzed and extended to SAR moving target detection. To eliminate the restriction of chirp-Fourier transform, a new modified definition is proposed and applied to SAR moving target detection. To detect multiple moving targets whose scattering intensities are different heavily, the CLEAN technique is combined with the above techniques and the ideal detection performance is achieved. At last, the whole dissertation is concluded.

具体的研究成果如下：针对常用的Wigner-Ville分布在多目标情况下存在交叉项，并且多普勒不模糊范围小的缺点，提出将短时Fourier变换和Gabor变换应用于SAR运动目标检测，分析了其优势所在；为进一步提高Wigner-Ville分布低信噪比条件下的信号检测能力，提出基于互Wigner-Ville分布的运动目标检测方法；分析了分数阶Fourier变换在线性调频信号检测中的应用，提出基于分数阶Fourier变换的运动目标检测算法；对离散Chirp-Fourier变换的定义进行了修正，提出修正的离散Chirp-Fourier变换，克服了限制其应用的约束条件，并用于SAR运动目标检测当中；强度相差较大的多运动目标检测历来是机载SAR技术的一个重点和难点，我们将CLEAN思想融入上述多种算法当中，良好地解决了该问题。

On the basis of analyzing modbus protocol and tcp/ip protocol, the design method of retrenching tcp/ip protocol is proposed, and multi-connection signal gathering device based on tcp/modbus protocol is designed. the method of transmitting data between the signal gathering device and multi-hosts in the internet is analysed.

在详细分析tcp/ip协议和modbus协议的基础上，提出对tcp/ip协议进行精简的设计方法，设计了基于tcp/modbus协议的面向多连接信号采集器，重点分析了信号采集器和多台计算机通过internet传输数据的方法。

Linkage mechanism of study. Forepart all gather be linkage mechanism structural analysis and agency designer. In recent years so emphasize in kinetic synthesis dynamic and motility analysis. So text needle towards inquire into slider four-bar linkage mechanism agency positioning control.Research emphases are as PID control, fuzzy control, Fuzzy sliding mode control three kinds of controllers for control core. Permeate practical mechanism to positioning control to function. Simple exertion market vends signal extract card (PCL-833) and multi-function card (PCI-1711). Make it make signal extract and bring forth exportation control voltage. Will AC servo motor turn signal, as positioning system point of angle sensor. Reach to slider four-bar linkage mechanism servo positional control research.

连杆机构的研究，早期都集中在连杆机构的结构分析和机构设计，近年来也多著重於运动及动力分析上，因此本文就是针对於探讨滑块四连杆机构的定位控制，研究重点是以PID控制、模糊控制、模糊顺滑模式控制三种控制器为控制核心，透过实际的机构达到控制定位的功能，运用市面上贩卖的讯号撷取卡(PCL-833)和多功能卡(PCI-1711)，使其对讯号做撷取和产生输出控制电压，将AC伺服马达的转动讯号，作为定位系统的角度感测器，达到滑块四连杆机构伺服定位控制的研究。

Socend It is the technique designing, mainly the lathe many axle case designing and the lathe's tongs design and it's assembles the diagram.

再来就是技术设计，主要是多轴箱装配图、夹具设计及其装配图。机床多轴箱设计，是本次设计的重点。

This dissertation stems from the project "Study on high efficient multi-flow transmission system" which is sub-project of the Natural Science Foundation Key Project "Fundamental study on energy saving of mechanical/fluid transmission and new transmission methods", which mainly analyzes the energy saving issue of mechanical transmission system from the point of view of design theory and method. Multi-flow transmission systems have been widely applied to large mechanical equipment such as creeper truck, helicopter, cement grinder, hoist, wind electricity generator, construction machinery and metallurgy industry.

本文来源于国家自然科学基金重点项目&机械流体传动的节能及新型传动方式的基础性研究&中的子课题&高效多流传动系统的设计理论和方法的研究&，主要是从设计理论和方法的角度分析机械传动系统的节能问题，多流传动系统已广泛应用于大型机械装备，如履带牵引车、直升机、水泥磨机、起重机、风力发电机及工程机械、冶金等行业之中。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。