应该每月回顾数据，并应该在系统中锁定任何在过去 90天里不活动的用户 ——一个帮助保护未用的帐户不被访问的策略。
The data should be reviewed monthly, and any user who was not active in the past 90 days should be locked out of the system--a policy that helps prevent unused accounts from being accessible.
由于在控制器的设计中，未用到任何线性化方法，因而所得控制器充分利用了系统的非线性特性。
Since the design is based on the nonlinear dynamic system without any linearization, the nonlinear property of the system is completely used for nonlinear robust robust controller.
由于在控制器的设计中，未用到任何线性化方法，因而所得控制器充分利用了系统的非线性特性。
Since the controller design is based completely on the nonlinear dynamic system without any linearization, the nonlinear property of the system is used for nonlinear robust controller design.
在数据管理系统中，把库中的若干成员移放在一起，以便把库中未用的存储空间构成一片连续的区域。
In data management system, to move library members together in a library to create one continuous area of unused space in the library.
例如，在有多个文件的文件系统中，文件占用的空间与系统中未用的空间之和应该等于总的可用空间。
For example, in a file system with multiple files, the sum of the space taken by the files plus the free space in the system must be equal to the total available space.
现在就下载使用，您将会体验到系统带来的全所未用的自由布局功能。
Download now, you will experience the entire system by the free distribution of unused functions.
现在就下载使用，您将会体验到系统带来的全所未用的自由布局功能。
Download now, you will experience the entire system by the free distribution of unused functions.
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