两个维护

一个数据库最多可以有两个维护窗口：在线窗口和离线窗口。

A database may have at most two maintenance windows : an online window and an offline window .

对局部修补加全面封闭和电化学脱盐保护两个维护方案，进行了技术经济比较。

Technical & economical comparison are carried out to the two maintenance schemes including regional mending plus total sealing and electro chemical desalting protection .

本次流程再造内容将主要涉及包括故障调度管理、割接升级管理这两个网络维护工作的重要流程。

This article cites two important processes : failure management , segmentation and upgrade management of network maintenance management system .

JDIC项目有两个目标：维护JavaAPI的跨平台，让程序可以在任何机器上运行，并支持人们使用的每个操作系统。

The JDIC project has two goals : keep the Java API cross-platform to let programs run on any machine and support every OS that people use .

一个是Mediator-12（MED12），即控制基因转录成信使RNA的中介体复合物亚基12基因，其他两个是帮助维护持染色体结构的基因。

Mediator-12 ( MED 12 ) , which helps to transcribe genes from DNA into RNA messengers , was one . The other two were genes that help maintain the structure of chromosomes .

本届大会将侧重两个方面：维护世界和平和新时期下的经济发展。

This conference will focus on two key missions : upkeep the world peace and promoting economy .

本地运输计划把他们的部分研发迁移到海外去，同时要在两个地方的维护开发过程。

Native Transport was planning to off-shore some of their z / OS development while maintaining their process of development in both locations .

例如，如果计划每天晚上执行两个小时的数据库维护，则只执行可以在两个小时内完成的任务。

For example , if you schedule database maintenance to run for two hours every evening , only tasks that can be completed within two hours are performed .

著作权限制制度存在的两个根本原因在于维护公民基本权利以及促进公共利益，正是这两个根本原因为著作权限制制度在网络环境下继续发挥作用提供了理论依据。

The two fundamental reasons for the system existence are defending basic civil rights and promoting public interests , which provided some theoretical grounds for copyright restrictions system persisting to work under network background .