以...为基础

Based on varying process of generator terminal parameters after excitation fault, shortages of excitation protective principle of static stability boundary and asynchronous impedance boundary are analyzed. It proposed that excitation fault research relates to large-disturbance stability. Because dynamic power-angle character of generator after excitation fault is non-sinusoidal, there are differences between dynamic power-angle character and static state power-angle character. So it isn't ideal to protective operation result based on small-disturbance stability and static stability boundary criterion. At the same time, it proposed that asynchronous boundary impedance criterion is a constant reactive power circle moving adown j Xd′. It can ensure complete loss-of-excitation generator measuring impedance enter into the circle, but can't ensure the other condition measuring impedance including impossible losing synchronism enter. So loss-of-excitation protection would be maloperation when system voltage drops short and recovers or generator rejects load.③Based on stability principle, it puts forward setting conditions and calculation method of generator loss-of-excitation protection by direct measuring power-angle.

以励磁故障后发电机端的相关参数的变化为基础，通过对以静稳定边界和异步阻抗边界作判据的两类三种现行励磁保护在原理上存在的缺陷分析，发现：励磁故障是一个大干扰稳定性问题，励磁故障后的发电机的动态功角特性与静态功角特性有很大的差异，已远非正弦曲线，因此基于小干扰稳定性原理、以静稳定边界作判据的保护必然动作不理想；异步边界阻抗判据是一个下移j Xd′的等无功阻抗圆，它可以保证完全失磁后的发电机测量阻抗能进入该阻抗圆，但不能保证完全失磁之外的其它状态不会进入该阻抗圆，因此在系统电压短时下降或发电机突然甩负荷等情况下可能启动该保护使之误动。

Hong Kong's advantage is its clean government, predictable and commonlaw?based legal environment, and international orientation.

香港的优势在于它有廉洁的政府，有可预测的以习惯法为基础的法制环境，整个城市以国际社会为导向。

The Geographic Information System theory as a guide, point-set topology theory as basis, this paper uses object-oriented method to study on profile-based three-dimensional topological data model and data structure. By use of computational geometry, GIS, computer graphics images, 3DGM, the construction and dynamic updating methods of 3DGM are researched on the basis of amended OO-Solid data model.

本文以地理信息系统理论为指导，以点集拓扑理论为基础，采用面向对象的方法研究了基于剖面的三维拓扑数据模型和数据结构，采用计算几何、地理信息系统、计算机图形图像学等方法研究了基于修正后的OO-Solid数据模型的三维地质模型构建与动态更新方法。

And then, Britain which was most advanced in working method and thinking mode compared with other countries broke out a capitalistic revolutionary which was leaded by the capitalists and based on vast farmers and the handworkers and landholders who had a close relationship with capitalist economy also took part in it..

于是，在劳动方式和思维方式与其他国家相比都最为进步的英国，于17世纪中叶，爆发了以资产阶级为领导的、以广大农民和手工业者为基础的以及同资本主义经济有密切联系的地主阶层参加的资产阶级大革命。

What's more, the system's software and hardware is tailorable, it is appropriate to the application, and it has strict requirement to the function, security, cost, volume, and power consumption.

摘要嵌入式系统是以应用为中心、以计算机技术为基础，软硬件可裁剪，适用于应用系统，对功能性、可靠性、成本、体积、功耗严格要求的专用计算机系统。

This paper analyzed the concept and the items of land consolidation and discussed the important role of ecological benefit assessment. Through the identification of effect boundary of land consolidation and based on the emergy theory, this paper proposed a method to assess the ecol...

该文阐述了土地整理内容，分析了生态效益评价在土地整理中的地位，通过对土地整理效应特征和边界的辨析，以能值理论为基础，提出了以自然环境系统的无偿能值投入变化量为表征的土地整理生态效益评价方法，构建了土地整理生态效益的评价公式。

The third part deals with the causes of the inheritance and evolution.The paper combines the method of historical musicology and ethonomusicology,presents a comprehensive and deep contrastive study of instrument compilation and orchestra organization between Korean aak and Chinese Yayue on the basis of the historical documents of the same period between China and Korea, thus revealing the evidence and cause of history-culture through the analysis of concrete music forms.

论文采用历史音乐学与民族音乐学相结合的研究方法，以历史为主线，并以中朝双方同时代的文献史料为基础，对中朝两国的雅乐在乐器编成、乐队编制等方面进行横向对比，对朝鲜的雅乐、唐乐和乡乐进行纵向对比，试图通过具体音乐形态的分析来揭示其历史文化的轨迹及其成因。

After the reform and opening-up, along with the deepening of market economy system and political reform, the entire society presents the opening, loose and active atmosphere day by day, various civil society organizations emerge increasingly. Civil society which takes the individual rights as the foundation and takes the civil society organizations as chief feature grows up gradually.

改革开放以后，随着我国市场经济体制和政治体制改革的逐步深入，整个社会日益呈现出开放、宽松、活跃的氛围，各种各样的民间组织日益涌现，以个人权利为基础，以民间组织为主要特征的公民社会逐渐兴起。

Based on the risk management for a cantilever cast pre-stresed concrete continuous bridge during construction stage and the basic process of risk management, this paper makes thorough research for the implement method of risk assessment and risk management during construction stage.

本文以一座预应力混凝土连续梁桥悬臂浇筑施工阶段的风险管理为背景，以目前风险研究确定的风险管理基本流程为基础，对桥梁施工阶段风险管理的具体实施方法进行了深入的分析和研究。

Thirdly, as to modernity of Chinese literature, based on the discussion of China and the West,tradition and modernity, it reveals their competition in the field of May 4th literature, theconfrontation, respective dilemma and final fusion of the east and west discourse. Finally,viewing the overseas Chinese critics as a whole, this thesis, taking C.T.

第三，在中国文学现代性问题上，以关于中与西、传统与现代的讨论为基础，揭示双方以&五四&文学传统为场域展开的角逐以及在中国文学现代性讨论中的中西话语交锋、各自的困境和最终的融合。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。