技术工作

The work of Town land classification and land price evaluation has characteristic such as large information, time limited efficacy, high quantity, applied extensive etc. These bring up the higher request to practicability and good quality of Model of land classification and land price evaluation that the core of the work.

城镇土地定级估价工作的大信息量、时效性、高质量、应用广泛等特性，对定级估价的核心——定级估价模型的质量提出了更高的要求，计算机技术和地理信息技术的飞跃发展，也为一些定量模型实现提供技术支持。

A Focus+Context technique based on circle packing is presented for interactive visualization of large hierarchical data. First, a triangular mesh generating method based on externally tangent circles packing is proposed to establish context.

综述了海量层次信息可视化与Focus+Context技术的相关工作，针对海量层次信息可视化的交互问题，在嵌套圆可视化技术的基础上提出了基于上下文感知的Focus+Context交互式可视化技术。

The main study in the paper is as follows: Firstly, discussing the purpose of carrying on hydropower units fault diagnosis, then, introduce state of the art and classical method in the field of fault diagnosis in hydroelectric sets. The mechanism, major failure and failure symptom of hydropower units, three methods that can identify unit's vibration fault. With the key technology of monitoring on hydropower sets together with the viberation signal-disposed and fault feature-extracted are analysised.

本文主要进行了以下工作：从水电厂实际出发，阐述了开展水电机组故障诊断研究的重要意义与目的，简要介绍了国内外水电机组故障诊断技术发展现状以及目前应用于故障诊断领域的常用方法，系统地分析归纳了水电机组振动的机理、主要故障及其故障征兆、识别水电机组振动故障原因的三种方法，以及水电机组监测的关键技术和故障特征提取技术。

For the sake of matching foam fluid frilling technology, international developed country has developed a series of foam fluid process technology, which run through each process of drilling, consummate well, increase output, exploitive and dynamic adjust.

为了与泡沫流体钻井技术相配套，国际上发达国家发展了一系列的泡沫流体作业技术，贯穿于钻井、完井、增产改造、开发及动态调整的各个过程。预计泡沫技术在我国会有相当大的应用前景。而在所有泡沫流体的作业中，一项共同的、重要的基础工作是研究、测定高温高压条件下的泡沫流体特性。

At first, with the low-frequency data measured, three of the LRE fault detection systems for the real-time condition are proposed using the nonlinear identification technology of the BP neural network, the state estimation technology of the dynamic neural network, and the pattern recognition technology of the fuzzy hypersphere neural network. The learning algorithms of the BP and dynamic neural network are researched at the same time. Furthermore, while the engine operation is divided into the start and steady-state processes, the real time ability, the response time, the accuracy, the robustness, the sensitivity and the monitoring parameter optimization are studied. In the test data analyses of the YF-75 engine, the detection system correctly carried out for all normal tests, and in the three abnormal tests the engine faults were accurately forecasted.

首先，基于低频测量数据，采用BP神经网络的非线性辨识技术、动态神经网络的状态估计技术及模糊超球神经网络的模式识别技术，提出了三种发动机故障实时检测系统；同时研究了BP神经网络和动态神经网络的学习算法；另外还把发动机工作分为启动过程和稳态过程，分别讨论了神经网络故障检测系统的实时性、及时性、准确性、鲁棒性、敏感性及参数优化问题；在YF-75发动机试车数据分析中，不仅全部正确地监测了正常试车过程，而且准确地预报了三次异常试车中的发动机故障。

The purpose of our work is that get the target and technique of pressure adjustment through the analysis of formation porous pressure that affects the quality of cementing, regulation of pressure change for infilling wells, technique of pressure dropping for whole block, technique of pressure discharge for high pressure, maintaining pressure in high pressure and lower penetrability formation.

突出的工作在于通过对影响固井质量的地层孔隙压力的分析得出压力剖面调整的目标，通过注水井降压规律、区块整体降压技术、高压层泄压技术、高渗低压层压力保持方法等几个方面研究提出一套压力剖面调整技术。

The article introduces the working principle, structure and feature of the experimental device-intelligent brake which can make electric current liquefy.

实验装置结构与工作原理1.1实验装置结构电流变液技术是当前国际上的高新技术和未来技术，它对学科发展或工程技术的变革都具有重大的学术价值和经济价值。

This text mainly passes the current situation, characteristic and existing problem of taking care of books of universities, colleges, junior colleges and special secondary schools of Shanxi of the investigation, combine scientific methods such as the modern management theory, system engineering,etc., has analyzed the institutional framework of taking care of books of all kinds of schools of our province and management system, comply with the information-based macroclimate and requirement of the teachers and students of the big, special secondary school universities and colleges, use marriage partner -oriented programming language Visual Basic 6.0 of the computer, database Microsoft Access 2000 and data base administration language SQL language, have analyzed the books managements of all universities, colleges, junior colleges and special secondary schools of our province, according to the actual conditions, combine books administrative skill, computer programming technology and database technology, have book developed the books information management system of each function module of can offer the inquiry, purchase of the books, borrow the book, return the book, lose the book on the computer ing etc., have offered the effective basis for development of the taking care of books undertaking of the education circle of our province.

本文主要通过调查山西省大、中专院校图书管理的现状、特点以及存在的问题，结合现代管理理论、系统工程等科学方法，分析了我省各类学校图书管理的组织结构及管理体系，顺应信息化大气候和大、中专院校的师生的要求，使用计算机面向对象的编程语言Visual Basic 6.0 、数据库Microsoft Access 2000和数据库管理语言SQL语言，对我省各大、中专院校的图书管理工作进行了分析，根据实际情况，将图书管理技术、计算机编程技术和数据库技术相结合，在微机上开发了能够提供对图书的查询、购买、借书、还书、丢书等各个功能模块的图书信息管理系统，为我省教育界的图书管理

Tt was tennis technical testing were shoe- n that the ball hitters were feasible in the testing because of its continuity, durability, stableness and objectivity. The ball hitters should be used according to different students of different levels.

证明应用多球发球机进行乒乓球基本技术考核是可行的，它具有连续性强、长时间持续高强度工作、能保持送球质量的统一和稳定性，减小送球的随意性和主观性同时提出其应用于技术考核的不足之处，探讨发球机用于技术考核的适宜对象和适宜内容。

At least three years relevant working experience and master in mechanical design, processing, hydraulic pressure, and pneumatics.

三年以上相关工作经验，精通机械设计和加工技术和液压、气动技术，熟练运用设备状态监测技术。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐