保护的

Through analyzing the reasons of the circumvallation s damage and discussing the value of the circumvallation and the significance of the preservation, feasible suggestions have been made on the basis of existing protective measures: the preservation of the ancient circumvallation should rely on the whole society which should use the advanced technologies and methods and adopt legal means so as to provide reference for the theory and practice of the preservation of the ancient circumvallation in jingzhou city.

分析古城墙遭到破坏的原因，探讨古城墙的价值及其保护的重要意义，在现有保护措施的基础上提出了一些可行性的保护建议：古城墙的保护要依靠全社会的力量，运用先进的技术和方法，采取法律的手段，为荆州古城墙的保护理论和实践工作提供参考。

The author considers that two problems are worth reflecting and studying:One is the regulating range;the other is that when legislators regulated the rights of software copyrighter that regulated in the eighth item of Computer Software Protection Byelaw,they did not consider the characteristics of computer software itself and concerning to protection period, it did not solved interest balance in copyrights protection of software.

二是我国《计算机软件保护条例》第八条规定了软件著作权人所享有的一系列权利，大都是因袭了著作权法对著作权保护的规定，并没有考虑到计算机软件本身的特性。另外从保护周期等方面考虑，软件著作权保护中并没有解决利益平衡问题。

This article in summarizes in our country nature protection area construction achievement foundation, outlined the nature protection area to each kind of natural ecosystem, the wild biology, the domesticated spec ie s, the wild blood relationship to plant and the idioplasm resources conservation present situation, including has constructed the nature protection area for protection biodiversity various components quantity, the area, the distribution and the management; Has appraised the nature protection area to the biodiversity various components protection effect; Has analyzed the existence question and proposed that strengthens measure which the biodiversity protects.

自然保护区建设是保护生物多样性的最有效途径。至1993年底，我国共建立各类型自然保护区763个，总面积6618万hm2，约占国土面积的6.8%。本文在总结我国自然保护区建设成就的基础上，概述了自然保护区对各类自然生态系统、野生生物、驯化物种、野生亲缘种及种质资源保护的现状，包括为保护生物多样性各组分已建自然保护区的数量、面积、分布及管理；评价了自然保护区对生物多样性各组分保护的效果；分析了存在问题并提出加强生物多样性就地保护的措施。

Therefore, it is time to construct the government mechanism to conserve the historic cities and towns, which includes the mechanism of making laws and regulations, the mechanism of propagation and education, the mechanism of protecting and planning, the mechanism of accrediting, the mechanism of supervision, and the mechanism of punition.

根据我国现实，历史城镇保护的当务之急是构建政府保护机制。它包括法律法规制定机制、宣传教育机制、保护规划机制、审批机制、监管机制、处罚机制等。

At the national level to protect animals South China tiger, the clouded leopard, Cabot's Tragopan, black deer and Dayaoshan Tuatara, national animal protection are two pangolins, monkeys and other 52 species, included in the national key protected wild plants water pine, red bean Shan, Guangdong Song and other 36 species.

国家一级保护动物有华南虎、云豹、黄腹角雉、黑鹿和瑶山鳄蜥，国家二级保护动物有穿山甲、猕猴等52种，列入国家重点保护的野生植物有水松、红豆杉、广东松等36种。

Reaction of 5'-O-p-methoxytrityl-thymidine with 1, 1'-carbonyl-diimidazole gave the 3'-O-carbonylimidazolide, which was condensed in high yield with 3'-O-protected thymidine to give a dithymidine carbonate. In the same way, we obtained the protected trithymidine dicarbonate. After deprotection, we obtained quantatively the trithymidine dicarbonate.By the same stratagy, we completed the synthesis of dithymidine sulfite.It was shown that allyl can be used as a good protection group for hydroxyl of ribose in the synthesis of oligonucleotides consisting in some unstable nucleotide analogues.

我们在第一部分工作的基础上，以烯丙基作为3'-OH的保护基合成了保护的三胸苷碳酸酯以及二胸苷亚硫酸酯，用我们所得的脱保护条件进行了脱保护研究，得到了三胸苷碳酸酯以及二胸苷亚硫酸酯，并研究了它们合成中的一些化学问题，结果表明：烯丙基能很好地运用于这两类寡核苷酸类似物的合成中，其脱保护条件为中性，不会影响碳酸酯键及亚硫酸酯键。

Main configuration features of some protections are discussed in detail,such as the main protection configuration scheme of generator with different neutral point leadout modes ,the principle of inter -turn protection configuration,configuration schemes of branch differential protection and zero-sequence differential p

详细讨论了一些主要的保护配置特点。如中性点引出方式不同的发电机主保护配置方案，匝间保护的配置原则。主变压器的分侧差动和零序差动的配置方案。和其他保护的配置特点。简单分析了保护用电流互感器的选型问题。

This article in summarizes in our country nature protection area construction achievement foundation, outlined the nature protection area to each kind of natural ecosystem, the wild biology, the domesticated species, the wild blood relationship to plant and the idioplasm resources conservation present situation, including has constructed the nature protection area for protection biodiversity various components quantity, the area, the distribution and the management; Has appraised the nature protection area to the biodiversity various components protection effect; Has analyzed the existence question and proposed that strengthens measure whichthe biodiversity protects.

自然保护区建设是保护生物多样性的最有效途径。至1993年底，我国共建立各类型自然保护区763个，总面积6618万hm2，约占国土面积的6.8％。本文在总结我国自然保护区建设成就的基础上，概述了自然保护区对各类自然生态系统、野生生物、驯化物种、野生亲缘种及种质资源保护的现状，包括为保护生物多样性各组分已建自然保护区的数量、面积、分布及管理；评价了自然保护区对生物多样性各组分保护的效果；分析了存在问题并提出加强生物多样性就地保护的措施。

The thesis mainly concerns the following aspects: the relay protection and its trip-close circuit of two circuits transmission-lines are stand alone. The device has the ability of phase-trip that is owns transmission line single phase , 2 or 3phases fault only fault phase tripped.so as to making the power system contact as close as possible. The function of reclosing distribute into relay protection of line and breaker, so it is easy to get no-serious fault information of line protection and realize self-adapted multi pole reclosing. The breaker reclosing depend on the state of owns breaker andthe adjacent breaker. The criterion of serious fault and the sequence reclosing is simple and useful.

本项目具有如下特点：两回线的保护装置及跳、合闸回路完全独立；装置具有分相跳闸功能，即本线单相、两相、三相故障时均只跳故障相，使得故障时系统联系尽可能紧密；重合闸功能合理分配在线路保护和断路器保护中，充分利用了线路保护的信息实现无严重故障判别和分相顺序重合策略的自适应重合功能，由断路器保护根据断路器本身的工作状态和相邻断路器的配合关系实现重合出口；判断严重故障的判据及分相顺序重合闸原理简单合理，具有实用意义，降低了重合于永久故障对系统的冲击。

In-situ and ex-situ conservations are two conservation forms of Hainan eld's deer.

就地保护和迁地保护是海南坡鹿保护的两种基本形式。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。