访问控制—使系统能够识别用户组的安全性策略。

Access control. Enables the system to recognize security policies for groups of users.

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这经常会由于新用户组访问系统而产生新需求，如果能够捕获和管理这些需求，将能够延长应用程序的寿命。

This often elicits new requirements as new groups of users are accessing the system, and having a means of capturing and managing these requirements can extend the application's longevity.

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执行硬件标准化的另一种方法是对特殊类型的客户机系统上的某些用户组进行标准化，比如。

Another way to establish standardization from a hardware perspective is to standardize certain segments of users on special types of client systems, such as the following.

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