There is one area where fine-grained authorization models are ubiquitous and well-understood: the operating system.
存在这样一个区域，其中细粒度授权模型是普遍存在的和众所周知的：即操作系统。
Obviously, the ability to specify different levels of wild cards and accumulate rights from multiple groups provides the means with which to build extremely fine-grained authorization schemes.
显而易见，通过指定不同级别的通配符以及累计多个分组的权限，您可以构建非常细粒度的授权模式。
This type of authorization testing might be called fine-grained access control because it is applied by a running program to virtually any type of resource that the program works with.
此类授权测试可以称为细粒度访问控制，因为运行应用程序将其应用于该程序所使用的几乎任何类型的资源。
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