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Based on the detailed analyzing of impact system working process, the differential eguation of the system was got, and the mathematical model of the hydraulic impact system was builted, on basis of the mathematical model, By using of dynamic simulation function of Matlab ,the author has built the simulation model of the impact system based on software Simulink and run it after inputting the parameter ,the dynamic graph curve of impact velocity and presser of oil and position of knife rest were got, and the dynamic characteristic of impact system was analyzed,the simulated results are accorded with the fact,and some rational parameters can be found.

在对冲击式采煤机液压冲击系统工作过程进行详细分析的基础上，运用微分方程建模方法，建立了液压冲击系统的数学模型即系统的动态方程，并在该数学模型的基础上，采用Matlab中的Simulink动态仿真功能，建立了基于Simulink的冲击系统仿真模型，通过给定冲击式采煤机冲击系统的相关参数，对该系统进行仿真，得到了冲击式采煤机工作过程中冲击速度和油液压力以及刀架位移的变化曲线，进而对冲击系统的动态特性进行了分析，结果与实际情况较为吻合，并由此得出某些合理的参数。

On the other hand,it is necessary to cut web page for the purpose of customization and reduction in surfing costs of PDA and mobile consumers.A new method of web page cutting mobile device oriented is proposed.First,structuring HTML documents.Second,converting HTML to DOM tree based on DOM criterion.Third,cutting and re-constructing web page based on content block and link block.A prototype system has been developed by open source project named HTMLParser.

就以上问题，提出一种面向移动设备网页切割的解决方案：首先对半结构化的HTML文档进行结构化处理，接着基于DOM规范将HTML转化为DOM树并对其噪音清洗，然后对网页进行基于内容和基于链接的分块并对分块结果按照分层和用户定制的思想进行切割、重构，最后在开源项目HTMLParser基础上开发了原型系统并对系统执行效率和切割效果进行了评估。

The main contents and results of this paper are listed as follows:Based on the finite element analysis software ANSYS establish a bridge of three-dimensional mechanical model of CWR;Based on an actual project,calculate different conditions of three forms of bridge and research the reasonable removal scope of fastener;Research on the allowed lock temperature rail track construction of partial maintenance of range.By analyzing the result obtain the best way to replace the support of a bridge and the range of removal of the bearing and permission of rail temperature of construction.It supports some recommendations for the replacement of city construction maintenance.

本文主要研究内容为：基于有限元分析软件ANSYS建立了桥上无缝线路三维力学模型；依据某实际工程，分析计算了三种桥梁形式在不同顶升工况下的钢轨和扣件受力，研究了扣件的合理拆除范围；对维修后局部钢轨施工锁定轨温的允许范围进行了研究；分析得出了城轨桥梁更换支座施工的最佳顶升方式、扣件拆除范围和允许施工轨温，为城轨桥梁更换支座的施工维修提出了一些建议。

The Safety Evaluation of Driving Environment Based on Ergonomics The research on road traffic environment's amenity based on ergonomics, is high input, concerns wide, complicated and long-cycle research, but has great applicable prospect.

图 室内研究状态 Fig The indoor research state 基于人机工程学的行车环境安全性评价基于人机工程学的道路交通环境宜人性的研究，是投入大，牵涉面广，复杂而又周期长的研究，也是很有应用前景的研究。

Disintegration of the system and recombination of the fragments all reveal a material world based on the logic of modern technology, disordered order and effort on the part of the artist to seek to rebuild a life scene based on a new outlook.

这种系统的分解与碎片的重组，体现了一种现代科技逻辑思维下的物质世界景观，一种无序中的有序，也体现了艺术家试图以一种新的价值观重组现实生活景观的努力。

Based on studies about current development of Methods of separating meiofauna, a new method is advanced in this paper. A suit of device was designed to Separate meiofauna from benthic sediments sample automatically, accurately and efficiently, which based on the technology of Laser-induced Fluorescence Detection, and used other technologies, such as noctilucence, electronics, biophysics, computer, mechanism, and so on. The scheme of macrocosm, the design of light route, the hardware and software design of the photoelectricity detection system and machine control system, the method of signal processing are introduced, especially the hardware and software design and the method of signal processing.

论文分析了目前国内外所使用的小型底栖生物分离方法现状，并以此为基础，自主开发了一套基于激光诱导荧光技术，并且集荧光化学技术、电子物理技术、光电测量技术、计算机技术及机械技术为一体的小型底栖生物标本自动分离系统，实现了从沉积物样品中自动分离小型底栖生物标本，从而大幅度提高室内小型底栖生物分样的工作效率和精度的目的，并以此完成了大洋协会&十五&攻关项目：&小型底栖生物标本自动分离系统研制&。

The bureaucratic organization, to be specifically, has the exactness to deal with the complexity, because it is based on the rational principles, and comes by rational calculation; It has the stability because it is based on the stable rules and hierarchy structure; It has the "reliability" on implementation of administrative goals, because personal factors are removed, the probability of making mistakes is minished under the strict "discipline" and appointment of qualified employees.

具体地说，在应对复杂性上，官僚制组织是按照理性的原则建立起来的，其组织分工和工作程序都是经过理性算计的，更具有&精确性&；以稳定的规章制度和稳固的科层制结构为基础，具有&稳定性&；由于排除管理中的人格因素，严格按照&纪律&来推行工作，就相对减小了工作出错的概率；任用经过培训的合格人员，按照专业分工将复杂的事务分解开来，因而在实现规定的行政目标方面，具有&可靠性&。

Aiming to a method for the synthesis of silicon nitride powder by direct nitridation process based on fluidization technology, a two-dimensional mathematical model of thermal process in a suspended bed was established, the thermal process was simulated based on the commercial CFD software FLUENT, and the effects of the flow velocity of nitrogen gas, the ratio of particle to gas and nitridation temperature on the temperature of the bed and the conversion rate of silicon were analyzed.

针对基于流态化技术利用硅粉直接氮化合成氮化硅粉的新工艺，建立了悬浮床内热过程的二维数学模型，并借助CFD商业软件FLUENT对悬浮床内热过程进行了数值模拟，分析了氮气速度、粉气比和氮化温度等因素对温度场和硅转化率的影响。

First, we analyse USB communication methods, and there are three important methods; Second, we discuss the whole software structure and communication protocols and design a basic protocol model based on embedded environment. Then, we explain the implementation of a file transport system based on this model. Through the comprehensive utilization of StrongARM UDC and Linux USB modules, we complete a portable protocol stack. Moreover, the function of the system is tested under the Windows and Linux OS.This thesis provides us with a full description on the realization of the USB mass storage system.

首先是USB系统通讯方法分析，将其归纳为三种主要的形式；然后论述了系统采用的的整体软件架构和通信协议体系，提出了基于嵌入式系统平台的协议栈的基本模型和具体内核实现机制，并阐述了基于此模型的文件传输系统的实现方法；最后，本课题通过综合运用StrongARM处理器上的USB设备控制器和Linux核心中提供的USB设备核心模块与字符设备模块，实现了一套可移植的USB海量存储设备类协议栈，并给出了系统在Widnows和Linux操作系统环境下的测试结果。

The humidity resistance and the sensitivity to chemical warfare agents simulants of the tuned films were also investigated.Self-assembled LBL polyaniline films were prepared from aniline monomers by in situ polymerization and the mechanism of film formation was discussed. It was proposed that the self-assembly of polyaniline occurred through the quick absorption of aniline monomer cations or aniline monomer cation radicals on the glass surfaces by electrostatic attractions to form homogeneous polymerization centers, then increased gradually by the way of upright to the glass supports for extensity, leading to the polyaniline chain growth. The polyaniline was doped under acidic condition to absorb anionic polyelectrolyte, such as sodium polystyrene sulfonate based on the electrostatic force, or to adsorb polymer based on hydrogen-bonding interactions, for example Polyvinyl Alcohol, and then recycled to fabricate_n or_n self-assembled multilayer films.

跟踪了原位聚合的具有纳米结构的聚苯胺多层自组装膜的成膜过程，提出了该自组装膜的成膜机理：聚合反应初始阶段的苯胺阳离子或苯胺阳离子自由基通过静电作用快速吸附到带负电荷的基片表面，形成均匀的聚合中心，然后以垂直于基片的方式进行链增长生成PANI；PANI在酸性条件下经现场掺杂后带正电荷，再通过静电作用吸附带负电荷的聚电解质如聚苯乙烯磺酸钠，或通过氢键作用吸附聚合物如聚乙烯醇，这样循环LBL-SA即得到_n或_n等原位聚合聚苯胺自组装膜。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。