保护

General layout: General idea should focus on protecting urban water sources, restoring riverways, wetlands and groundwater, improving the water body function, strengthening water resources allocation and water function regions management. Based on existing water project structures, the generallayout follows as that urban water sources conservation on the upriver, wetland and groundwater restoration on mid-river and coastal wetland and estuarine eco-area restoration on the downriver, achieve the target that rivers and lakes 'connection, green bank, clean water, flowing river', then form aquaticecosystem protection and guarantee system.

以保护城市水源地为重点，以修复河道湿地、地下水和改善水体功能为核心，以强化水资源配置和水功能区管理为关键，基于现有的水利工程体系，在流域上游建立以城市饮用水水源地为主体的生态保护屏障，在流域中游建设以湖泊为点、河道为线、地下水为面的水生态修复系统，在流域下游构建以滨海湿地和入海河口为中心的生态恢复区，遏制水土流失，增强水源涵养，保护水功能区，实现河、湖&连通、绿岸、清水、流水&，进而形成防控结合的水生态环境保护与修复保障体系。

Combined with present situation on overcurrent protection of low voltage electrified wire netting in mine,analysed several reasons on appeared mis-start or refuse-start of overcurrent protection in mine,thus provided some concrete arguments for research workers and users of overcurrent protection .

结合目前井下低压电网过流保护的现状，探讨了井下过流保护出现误动与拒动的诸多原因，以便给采用新原理的过流保护的研究者和改进现有过流保护的使用者提供一些具体的论据。

Wide-area measurement information of power grid is used for enacting protection strategies in WAPS, so it could make protections located at different positions in power grid work cooperatively. After analysis on availability of wide-area information in protection system, building WAPS to defend three different types of power system stability problems is presented, and two functions of WAPS, wide-area backup protection and wide-area emergency control, are expounded in the paper.

进而讨论了广域测量信息在保护中的可用性，提出按电力系统&三道防线&要求构建广域保护系统，阐述了广域保护的两大功能：广域后备保护和广域紧急控制。

Xi'an Forest of Steles and its environment are selected as the objects of the study.

本文以碑林及其环境为研究对象，在当代国际文化遗产保护的理论基础上，从文化遗产价值分析的角度入手，通过追溯碑林的历史演进过程、回顾它的保护历程、调查其保护现状，对碑林文化遗产的价值进行了重新判定与分析，并就当前西安碑林保护的内容、方法、工作要点及其关键性问题提出了观点和建议。

Detector, compressor overload protecting switch, pneumatic protection switch, water flow protection

蓄冷、蓄热槽超温保护，传感器故障侦测器，压缩机过载保护开关，气压保护开关，水流保护开关，欧制欠相

Equipped with phrase protection relay, power short-cut protection, current overload protection, hi-low voltage switch, freeze protection, water fiow control, electronic time holdup device,etc.

装有相序保护、电源短路保护、电流过载保护、高低压控制、结冰保护、水流制、电子时间延迟安全装置。

The necessity of installing phase to phase fault protection on LV side of transformer is presented in this paper by analyzing the protection capability of phase to phase impedance protection on HV and MV sides of 500kV transformer against phase to phase fault on its LV side.

通过分析 50 0kV变压器高、中压侧相间阻抗保护对其低压侧相间故障的保护能力，阐述了变压器低压侧相间故障保护配置的必要性，并对保护的配置方式提出了建议。

The study indicates that:install MOA at line side is the most effectiveness method to protect banked switch,keep up the tower dielectric level will increase the probability of lightning stroke, but it can reduce the amplitude of lightning intrusive waves, this is advantage to the protection of the substation ,and lightning protective effect of this mode is the best.

研究表明：在开关前安装MOA是保护热备用开关的最有效措施，即使在最严重的情况下，热备用开关的绝缘裕度也超过10%，可以保护开关的正常使用；不增加进线保护段杆塔的绝缘水平会增加进线保护段的雷击概率，但是此措施可以降低入侵波的幅值，对变电所防雷有利，这种防护方式的防雷效果最好。

For souvenir " earthly day ", establish consciousness of hardship of resource of the whole people, protect the earth, this print editorial office is special branch of youth of society of economy of as geological as division of science and technology of academy of economy of Chinese land natural resources, China mineral products was engineered jointly this period commemorative column, li Xinyu of academy of economy of natural resources of land of specially invite China's deputy researcher, Wang Wen's deputy researcher, Hu Xiaoping's deputy researcher " be kind to resource of the earth, protection " write civil, with period the protective consciousness that raises numerous people, be kind to the earth, protect resource, to build comparatively well-off society in the round the implementation of grand target provides enough resource safeguard.

为纪念&地球日&，树立全民资源忧患意识，保护地球，本刊编辑部特与中国国土资源经济研究院科技处、中国地质矿产经济学会青年分会共同策划了本期纪念专栏，特邀中国国土资源经济研究院李新玉副研究员、王文副研究员、胡小平副研究员就&善待地球、保护资源&撰文，以期提高广大民众的保护意识，善待地球，保护资源，为全面建设小康社会宏伟目标的实现提供充足的资源保障。

It has been committed itself to cultural heritage conservation and management in Shaanxi Province since 50's of last century, presided archeology investigations, excavation and clearance, traditional building maintenance and heritage conservations for many key cultural heritage sites and made great contribution to cultural heritage conservations in the Province.

西安文物保护修复中心的前身是陕西省文物管理委员会，从上世纪50年代开始，即致力于陕西省文物的保护与管理工作，曾主持了多项省内重要文物点的考古调查、发掘清理，以及古建筑维修、文物保护等工作，为我省的文物保护事业做出了很大的贡献。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。