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This design installs the process to the road bridge in the space knothole porterage work request, design a kind of new derrick - build a bridge the Dragon gate derrick of liquid press the system, build a bridge the Dragon gate derrick to mainly be constitute by four parts, namely:Rise to rise the organization, small garage to walk organization, change direction the organization and big garages to walk organization.

本设计针对路桥架设过程中博格板的搬运工作要求，设计一种新型起重机械——架桥龙门起重机的液压系统，架桥龙门起重机主要由四个部分组成，即：起升机构、小车行走机构、转向机构和大车行走机构。

This paper presents a stability criterion for design iterative learning controller. From the criterion,one can change the design problem into finding a positive definite discrete matrix kernel. It has been shown that what kind of variable can be controlled by the iterative learning,(2) and what kind of filter can be included into the controller.

摘要提出了一种针对自学习控制的稳定性判据，应用这一稳定性判据将自学习控制器的设计转化为寻找正定离散矩阵核，从而回答了两个问题，其一什么样的量可以通过自学习叠代加以控制，其二学习叠代中什么样的滤波环节的引入不会影响学习收敛性。

These problems are expert system"s key taches and the "bottle neck of its advancement, they also predestine that it is a time-consuming and complex task to design and exploit expert system.For the reasons above, and by combining natural funds project of Hebei province, the author investigates the artificial intelligence of apparatus design.

这些问题在一定程度上构成了专家系统的关键环节和进一步发展的"瓶颈"，这也决定了专家系统设计开发是一项非常费时而且复杂的技术工作。

Aiming at structural design influence of part physical dimension and uncertainty of exterior load, response surface and several statistic parameter analyse of bridge truss structure bending stress and deflection was proceed by means of probability design and finite element method.

针对桥梁桁架实际设计中，零件结构尺寸、外部载荷的不确定性对结构设计的影响，采用概率设计与有限元技术相结合，通过参数化建模，运用响应面法构造了近似函数，对桥梁桁架弯曲应力和挠度进行了概率设计。

By analyzing the chart of process design, and using AI in the area, the intelligent hierarchial design model is proposed.

通过分析工艺设计流程的特点，把智能引入设计中，提出了智能层次设计模型。

In passive balun, we implement the Rat-Race and Marchand balun by using the TSMC 0.35 um CMOS technology process in circuit design. Because the passive circuit always occupy much size in the integrated circuit. So we miniaturized the Rat-Race and Marchand balun in design.

在被动电路分合波器中，利用了TSMC 0.35 um COMS制程制作Rat-Race与Marchand balun，因为在IC制程上被动电路往往占据了很大的面积，所以更进一步将上述两者分合波器微小化，以利於积体电路的实现。

First of all, we introduce the 60GHz rat-race which is symmetric and experimental, and then implement 10GHz wideband mixer by using TSMC SiGe 0.35um BiCMOS process and GCTC 2.0um HBT process in circuit design. In TSMC SiGe 0.35um,we design micro mixer with Cherry Hooper technique and active load with single ended output.

本论文首先介绍60GHz实验性质的rat-race对称电路，接著在电路设计方面以TSMC SiGe 0.35μm BiCMOS以及GCT 2μm InGaP/GaAs HBT 制程来研制应用於10GHz 之宽频混频器，其中在TSMC SiGe制程包含了使用Cherry Hooper技术混频器以及电流镜主动负载单端输出的微混频器。

precise calculating formula is derivated to determine magnification ratio of voltage,input resistance and output resistance in amplifying circuits based on th feedback circuit model with cascade voltage.with th new calculating methods put forward by the author,it is possible to solve the problems in terms of calculation in amplifying circuits,the key problem being low level of exactness.the research shows the influence of components′ parameters of basic amplifying circuits and feedback circuits on feedback amplifying circuits.the results of the research may contribute to design amplifying circuits and electronic instrument with higher performance,due to the simpler calculation in the design of feedback circuit with cascade voltage.

摘 要：在建立电压串联反馈电路模型基础上，推导出放大电路中的电压放大倍数、输入电阻、输出电阻的精确计算公式。提出新的计算方法，从而解决了放大电路计算不方便，精确度不高、准确性不够的问题。同时进一步揭示了基本放大电路、反馈电路元件参数对反馈放大电路的影响关系。为设计出高性能放大电路及电子设备指明了方向，更加方便于电压串联反馈电路的计算。

During the design process of chemistry teaching system , the teacher should recompose and design the chemical knowledge according to his own special feature, the actual situation of students and teaching conditions, develop it by the arrangement of terms, chapters, lessons in turn, and make it a information network.

用系统论的观点分析说明了化学教学的要素和设计流程。在化学教学系统的设计过程中，教师要根据自身特点、学生实际情况和教学条件把化学知识重新组合、设计，按学期、章、课时的层次依次展开，使之成为一个信息网络。通过最优化的教学设计，能使教和学协调、和谐，化学教学系统运行通

By comparing the design rainfall for the urban area and suburbs in the same period,and taking meteorological and geographical factors into consideration,the difference of short duration design rainstorm intensity between the urban area and suburbs and its relation to the recurrence period were opened out.

通过同一时期中心城区和区县设计雨量的对比，结合气候和地理因素的影响分析，揭示了上海中心城区与市郊短历时设计暴雨强度的差异及其与重现期的关系。

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。