维护

This paper mainly students Elective System Analysis and Design, including development of its key database background to the establishment and maintenance of front-end applications and the development of the two areas.

本论文主要包括学生选课系统方案分析与设计，其开发主要包括后台数据库的建立和维护以及前端应用程序的开发两个方面。

Second, during the course of economic globalization, only by establishing an economic and trade regime in line with international practices and the specific situation of the country, can they avoid their disadvantages and fully play out advantages, and therefore electively safeguard their respective economic security while opening to the outside world; and

第二，在经济全球化的进程中，只有建立起与国际通行规则相适应同时又符合本国实际情况的经济贸易管理体制，才能趋利避害，并在对外开放的同时有效地维护本国的经济安全

This manual has been prepared to acquaint you with the installation, operation, and maintenance of your electric water heater and to provide important safety information in these areas.

本手册目的是为了让用户熟悉电热水器的安装、操作和保养维护，并提供有关的重要安全信息。

This paper is based on the actual condition of a certain electrical equipment shop. It elaborated the entire information systematic course of the shop information management requirement that establishes to satisfy this kind of shop and enterprise in detail, including system's general state and plan , the stages such as analysis, design, enforcement and maintenance.

本文从某一电器商店的实际情况出发，详细阐述了建立满足该类商店、企业的商店信息管理要求的信息系统的整个过程，主要包括系统的概述、规划、分析、设计、实施、维护等阶段，每一个过程都进行了详细的介绍，并给出了每个阶段相应的文档。

We are pleased to maintain your plant or your system electrically, mechanically and also concerning the software.

我们十分荣幸为您的工厂以及系统设备，包括电子方面的、机械方面的、甚至软件方面的设备，做维护保养。

Your half an year does not have what reason to understand a telephone call again without electrify word or what, arrived one year to do not have reason more, this broken, it is actually very regrettablly, everybody is understanding at that time, it is your resource, I feel this the basiccest is can be in more large-scale safeguards your person arteries and veins rise.

你半年没有通电话就没有什么理由再通电话或者什么，到了一年就更没有理由了，这个就断掉了，其实是很可惜的，当时大家都是认识的，都是你的资源，我觉得这个最基本的就是把能够在更大范围的把你人脉维护起来。

But I in charged of electromagnetism relay manufacture and new produce design.

而我主要负责小型电磁继电器的产品生产维护以及新产品的开发和设计工作。

Disclosed is an assembled electromotive curtain for easy installation, simple manipulation, and convenient maintenance.

本发明公开了一种安装容易、操纵简单、维护方便的组合电动帘幕。

The management information system is develops on the electronic data processing system, and so on is composed of the human and the computer can carry on the information the collection, the transmission, the storage, the processing, the maintenance and the use system.

管理信息系统是在电子数据处理系统上发展起来的，由人和计算机等组成的能进行信息的收集、传送、储存、加工、维护和使用的系统。

As the clean, non-pollution, recycling utilized energy, small hydropower is an essential parts of Chinese strategy of continuous development. China offered a series of preferential policies on the different development periods of the small hydropower and the development of small hydropower had achieved outstanding accomplishment. Due to the absence of the social benefit and ecological benefit assessment in the economic assessment of the small hydropower, the netting electrovalence is irrational, the operation and maintenance on the small hydropower becomes difficult, and it will cause the lack of competitive ablility in the electricity market.

正因如此，中国在小水电发展的不同时期制定了一系列优惠扶持政策，小水电发展也取得了举世瞩目的成绩，但是就目前情况而言，由于小水电的经济评价中的社会效益和生态效益评价缺失，造成小水电上网低定价机制，从而导致了小水电站运行和维护困难，以及在电力市场中缺乏竞争力。

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。