Objects exist in a message path hierarchy and respond to messages generated by either the user or the system itself.
对象置身于消息传播的路径所构成的一个层级结构之中，响应由用户或者系统本身产生的各种消息。
On success, the user will have authenticated access to IBM DFS space and the NFS client will then be able to view the same file system hierarchy as the DFS client.
操作成功之后，用户将可以以身份验证的方式访问IBMDFS空间，而NFS客户端能够如dfs客户端一样浏览相同的文件系统层次结构。
The flowchart in Figure 8 summarizes how the hierarchy of authorization takes place while a user tries to create an item in the CM system.
图8所示的流程图总结了当用户试图在CM系统中创建项目时，授权机制如何发挥作用。
However, the proposed system enables the user to access all these files in a single hierarchy with a single mount operation.
不过，在这个系统中，用户使用一个装载操作就可以在一？目录结构中访问所有这些文件。
This kind of frame, that is access mode from above to below, is called user hierarchy management system.
与这种层级结构即上级对下级的访问方式相对应的信息系统就是用户层级管理系统。
This kind of frame, that is access mode from above to below, is called user hierarchy management system.
与这种层级结构即上级对下级的访问方式相对应的信息系统就是用户层级管理系统。
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