Using tradition RBAC to model the access control requirement under such environments will lead to define permissions and roles in each one of these sub-structures.

传统RBAC模型在这种环境下进行访问控制时需要为每个同构部分定义权限和角色。

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Administrators also control access to project documents and requirements by assigning document type and requirement type permissions to user groups.

管理员还可以通过给用户组分配文档类型和需求类型权限来控制项目文档和需求的访问。

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Also, with the work done on introducing multiprocessing capabilities to the JVM (see Resources) came the requirement for user-based access control.

同时，随着在JVM中引入了多进程能力(请参阅参考资料)，出现了对基于用户的访问控制的要求。

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