当产品的市场成熟，自己与竞争对手的市场份额比例也相对固定时，公司就进入了维护期。
When product market space matures and the market share between competitors becomes fixed, the company enters the maintain stage.
数据仓库和业务智能化环境的一项常见需求是，维护特定时间段内滚动变化的历史数据。
A frequent requirement for data warehouses and business intelligence environments involves maintaining a rolling history of select data over a given period of time.
在维护窗口中，数据库实例会在特定时间段内被离线。
The database instance is taken offline for certain period of time within the maintenance window.
对传统直流励磁机的励磁系统而言，其带有滑动接触部分的换向器和炭刷等薄弱环节，需要定时检修与维护。
The exciter system of traditional dc exciter has some weaknesses, whose commutators and carbon brushes often need examining, repairing and maintaining timely.
我们称为维护问题，并提出恒定时问维护的概念，即维护问题算法的时间复杂性与数据库大小无关。
We propose a notion of constant time maintenance, according to which the maintenance algorithm runs in time independent of the size of the database state.
我们为你的站点维护提供了一个日历例子，来帮助你确定时间使你的站点维护的很好，运行地顺畅。
We've put together a sample calendar for your site maintenance to help you schedule time to keep your WordPress site tuned up and running smoothly.
维护中央数据库，告诉您用户在任何给定时间连接到的服务器。
Maintain a central database that tells you which server a user is connected to at any given time.
预防性设备维护是按周期、约定时间间隔对设备定期进行维护，是设备维护管理常用的手段之一。
Preventive equipment maintenance is to maintain equipment periodically according to a period and a conventional time interval and is a normal measure for equipment maintenance and management.
预防性设备维护是按周期、约定时间间隔对设备定期进行维护，是设备维护管理常用的手段之一。
Preventive equipment maintenance is to maintain equipment periodically according to a period and a conventional time interval and is a normal measure for equipment maintenance and management.
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