一旦选定组，小部件将加载该组现有的所有中介策略，以便可以使用现有的策略或创建一个新的策略。

Once a group is selected, the widget loads all existing mediation policies in that group so that you can use an existing one or create a new one.

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要使用已有的中介策略，选择 Use existing，会出现一个下拉菜单显示指定 WSRR 系统中选定组的所有中介策略。

To use an existing mediation policy, select Use existing, which causes the pull-down to display all of the mediation policies in the selected group on the WSRR system specified.

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此时，需要注意，这一特性可用于文件或者任何一组选定的文件和目录。

It's important to note at this point that this feature works on individual files or any group of selected files and directories.

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n l m s Once we have chosen a certain mix of n, l, m and s, it is used once for that particular atom.

一旦我们选定了一组量子数，它就只能被一个固定原子所有。

麻省理工公开课 - 固态化学导论课程节选