The thesis detailed introduces a new rail managed system to automated monitoring . this system has more improved in some aspect comparing to the telephone managed system , such as the signal transmission convenience , direct observation , timing and the information saving . contract to the same system , it has the small investing and maintaining advantages 该系统相对于目前的用电话网络进行调度的指挥系统，在信息的传输便利性、直观性、实时性和记录存储功能等方面都有较大的改进，与具有相同功能的系统相比，具有投资小、维护简单费用低的优点。
On the other hand , the harmonic and surge current in capacitor banks is restrained so that the capaci - tor is protected by reactor . since this type of reactor has a dry - type air - cored structure , no - core structure without ferromagnetic induc - tion effect , it is provided with the feature of good linearity and low noise , so that the product is convenient for maintenance and ope - ration in all weather 该型电抗器采用干式空心结构，维护简单，运行安全，无铁心，不存在铁磁饱和，电感值不会随电流变化而变化，线性度好，噪声低，适合全天候条件下运行。
( 1 ) aiming at the character of the cucumber diseases and insect pests diagnosis , database - based rules and other information - base arc designed in this paper . the rule - base with such structure is the result of simulating the information storage and activation of brain information . operation simple and maintenance easy arc the advantage of the rule - base with such structure ( 1 )针对黄瓜病虫害诊断的特点，本研究设计了基于数据库的规则库和其它的信息库，在规则库的建设中，用多维数据表来模仿了人脑信息的存贮与激活方式，以这种方式建立的规则库适合蔬菜病虫害诊断知识的特点，具有实用性强、操作和维护简单的特点。
Koal ca server integrates key management service , certificate authentication service , user registration service , web service , databsase service , ldap service and log audit service . it is small but complete product which is easy to use and convenient to maintain . it is also a specialized enterprise - level e - authentication product 格尔ca服务器集成了密钥管理服务、证书认证服务、用户注册管理服务、 web服务、数据库服务、 ldap服务、日志审计服务等功能，使用方便、维护简单，是小型而完整的专门化企业级电子认证中心产品。
