查询词典 engineering design

The layout scheme design of spacecraft vessel belongs to 3D packing problem with behavioral constraints, and it is also a complex engineering system problems with inscrutability, uncertainty, high nonlinearity, quality and quantity. It is almost impossible to solve it completely by human or computer alone.

航天器舱布局方案优化设计属带性能约束的三维布局优化问题，属具有不确定性、高度非线性、既有定性又有定量问题的复杂工程系统问题，单纯依靠人或计算机算法去解决都是非常困难的。1991年Lenat、Feigenbaum提出的人机合作(Man-Machine Synergy)和同年钱学森、戴汝为等提出的人机结合(Human-Machine Cooperation)思想和方法论，被认为是21世纪解决复杂工程问题的重要途径、自动化设计的重要发展方向，但其可操作性问题一直未很好解决。

They also design, the construction and the inspector general can control or the elimination land and the airpollution engineering project.

他们也设计，建筑和检查员一般的能控制或除去土地和 airpollution 工程计画。

Department of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 2. Department of Hydraulic Engineering, Tsinghua University, Beifing 100084）The existing problems in the design of reservoir flood operations is analyzed, then aiming at the insufficience of the typical flood, the method for reservoir flood operation with classified forecast is presented in this paper.

将水库防洪调度方法划分为两大类：一类不考虑预报，通常是选择"坝前库水位或实际入库流量"作为遭遇洪水量级及改变泄量的判断指标，称为常规防洪调度方法；另一类考虑预报，选择的判断指标多是产流预报的"累积净雨量"或汇流预报的"洪峰流量"或短时"晴雨"预报等信息，简称防洪预报调度方法。

The results show good agreement with the field test data, it is showed that the integral finite element method can provide good simulation for this kind of engineering activity and provide convincing computing results for the design and construction.

分析结果与工程实测数据比较吻合，表明整体有限元方法可以较好地模拟此类工程问题，从而为实际工程的设计施工提供一定的理论和计算依据。

Concurrent engineering is a systemic method that deals with design products and the correlative products process integrally and concurrently.

并行工程是集成的、并行的设计产品及相关的各种过程的系统方法。

Open Shortest Path First is a routing protocol developed for Internet Protocol networks by the Interior Gateway Protocol working group of the Internet Engineering Task Force. The working group was formed in 1988 to design an IGP based on the Shortest Path First algorithm for use in the Internet.

最短路径优先是Internet 任务工程组的一个工作组为IP网络开发的一个内部网关路由选择协议，该工作小组成立于1988年并致力于为INTERNET应用设计一个基于最短路径优先算法的内部网关路由协议。

At first, this paper surveys nonlinear control and the applications of neural networks in control respectively. Then it studies definitions, mathematical descriptions and conditions of invertibility for nonlinear systems, which are used to analyze the feasibility of inverse system control method. Conclusions about the feasibility of inverse control and the realizability of αth-order inverse systems in engineering are achieved. Furthermore, this paper discusses the feasibility, structure and identification of neural network αth-order inverse system for general single-input single-output continuous or discrete nonlinear systems and various composite control methods based on the αth-order inverse. At last, as a part work of an actual project, this paper focuses on the design of neural network αth-order inverse control method for thyristor controlled series compensation in power systems and its effect in improving the stability of power systems.

本文首先分别概述非线性系统的控制与人工神经网络在控制中的应用；然后研究非线性系统各种可逆性的定义、数学描述及可逆性条件，并用于分析逆系统控制方法的可行性，得出有关逆系统控制方法可行性的结论，阐明一般情况下α阶逆系统才工程可实现；接着本文针对一般单输入单输出连续、离散非线性系统，研究神经网络α阶逆系统的可行性、结构与辨识以及基于神经网络α阶逆系统的各种复合控制方法，并给出应用例子；最后本文结合实际项目，针对采用可控串补的电力系统，设计神经网络α阶逆系统控制方法，研究其对提高电力系统稳定性的作用。

Its principal activities include: to host international exhibitions, engineering and design exhibition, the exhibition transport, and domestic institutions organised exhibitions, as the International Exhibition agent investment, promotion and exhibition activities to provide advisory services.

其主要业务包括：主办国际性展览会、展览工程与设计，展览运输，与国内机构合办展览会，为国际大展代理招商、提供活动推广和展览咨询服务等。

This paper analyze and design the isomerism database from perspective of software engineering, furthermore the writer provide the corresponding model of the ware.

本文从软件工程的角度，对异构数据库系统进行了分析与设计，并给出了相应的软件模型。

Design process of an engineering structure is an iterative modification process.

工程结构的设计过程是一个反复修改的迭代过程。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。