提出要求

By means of simulation, the authors research the over-voltage level at AC and DC sides of converter station as well as arrestor operation condition caused by last breaker trip occurred in inverter station of UHVDC power transmission project from Yunnan to Guangdong; analyze and reveal the interrelations among over-voltage level, various operation conditions and different action delay of DC protections and propose the requirement to the time of protection coordination to ensure secure and reliable operation of equipments for the project.

文章对云广特高压直流系统逆变站最后断路器跳闸引起的换流站交直流侧过电压水平以及避雷器工况进行仿真研究，分析揭示不同运行工况、不同直流保护动作延时与过电压水平的相互关系，提出对保护配合时间的要求，以确保系统设备能安全可靠运行。

As more and more coal mines are excavated , the workload of artesian well increase gradually year after year , expeditiousness,science and safety of artesian well become a challenge against the technique of construction.

随着大量煤炭资源的开发，煤矿钻井作业的工作量逐年加大，快速、科学、安全钻井对钻井施工的技术提出了更高的要求。

The design project of refrigerating and vacuum system of the test-bed for heat tube in artificial satellite was introduced.

介绍了能满足卫星环境要求的热管传热试验台的制冷与真空系统的设计方案，提出了一种采用液氮制冷和分子泵抽真空系统的方案。

The Buyers asl for credit and have given the Bank of China , Beijing as a reference.

买方要求记账交易，并提出中国银行北京分行作为资信备询人。

According to the higher demands, and in connection with the actual work, we presented the basic principles of restructuring work is : to transform to a limited liability company, the withdrawal of all state assets, so that enterprises can truly become independent, self win again, self-development, self-restraint legal entity and market competitors. A new property relations, sound corporate governance structures, promoting institutional change mechanisms and the establishment of the industry characteristics, its own characteristics, full of vigor and vitality geotechnical companies; the principles of openness, fairness, justice, innovation, careful appraisal and strict procedures, standards, actively and steadily push forward the reform; correctly handle the state, the collective and individual interests, and conscientiously carry out the ideological and political work and stability, stock assets in the settlement of historical issues, security restructuring smooth and orderly manner.

根据上级要求，结合工作实际，我们提出了改制工作的基本原则是：以有限责任公司改造为突破口，国有资产全部退出，使企业真正成为自主经营、自负赢亏、自我发展、自我约束的法人实体和市场竞争主体；构建新型产权关系，健全法人治理结构，促进体制和机制转换，建立符合行业特点、自身特色、充满生机和活力的岩土工程公司；遵循公开、公平、公正原则，大胆创新，谨慎论证，严格程序，规范操作，积极稳妥地推进改革；正确处理国家、集体、个人三者利益，认真做好思想政治工作和稳定工作，用存量资产解决历史问题，保障改制工作顺利有序地进行。

With the demand of quick respond and precision for missile flight in terminal guidance, an adaptive nonlinear controller is designed that guarantees tracking performance when the uncertain parameters vary within stability bound. In order to achieve asymptotic tracking, adaptation is introduced to enhance closed-loop robustness, while mach number and mass changes with 35%.

文中根据导弹响应快和精度高的基本要求，在导弹变向跟踪接近目标时，对导弹制导控制过程中的控制方法进行研究和数学推导，提出了一种导弹末制导的自适应控制方法，该方法提高了导弹马赫数和质量在较大范围（35%）内变化时系统的响应精度和稳定性。

The foundation of this system provides a good reference to promote the standardization and intelligence of the overhaul and maintenance of vacuum switches. This paper develops a special HF pulse power supply for internal pressure estimation, which achieves the output of HF-HV sinusoidal pulse wave whose frequency and amplitude can be modified respectively, and meets the design requirements according to the results of Simulink simulation and practical experiments. With the help of AT89S52, this paper designs an I~2C serial bus based signal detection system for peak value signal acquisition of HF pulse currents, which communicates with the upper computer by asynchronous serial communication for uploading the data. In the upper computer, a human computer interface is developed by Matlab software, whose functions are to do some computation and graphic display, such as calibrating the relation curve of vacuum degree and peak value of HF pulse currents, vacuum degree computation, and vacuum lifetime evaluation analysis basing on grey forecasting model as well as making relative suggestions.

本文研制了用于真空度检测的高频脉冲电源，通过Simulink仿真和试验检验其满足设计要求，实现了电压幅值和频率独立可调的正弦波高频高压脉冲输出；利用以AT89S52为核心基于I~2C串行总线的信号检测系统实现高频脉冲电流峰值信号的采集，通过异步串行通信实现单片机与计算机之间的数据通信，将检测数据传至上位机；在上位机利用Matlab开发人机交互界面，实现相关数据处理和图形显示，包括真空度——高频脉冲电流峰值关系曲线标定、真空度数值计算、基于灰色预测模型的真空寿命评估分析和提出相应决策建议。

To step down at the request of the White House, as part of a

接受白宫提出的要他辞职的要求。

Renewed confirmation of the approval is then not necessary, but may be given at the request of the company.

重复的认证则没有必要，但可以在给公司的要求中提出。

The atomic weight of an element that has the same combining capacity as a given weight of another element ; the standard is 8 for oxygen

进而按照我国林业的总体发展目标及建设布局要求，在人口增长、基础设施建设等因素的变化的背景下，考虑到区域经济增长与林地面积变化的关系，我们提出有针对性地林地保护、林业发展的决策建议。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。