资源与全局唯一标识符相关联，该全局唯一标识符允许数据结构有效地存储并从散列表中检索取得。
A resource is associated with a globally unique identifier that allows the data structure to be efficiently stored and retrieved from a hash table.
其次，操作系统项，将创建指定的操作系统映像和引用RAMDISK设备对象 （通过其全局唯一标识符或GUID）。
Second, an operating system entry is created that specifies the operating system image and references the RAMDISK device object (by its globally unique identifier, or GUID).
事实上，项id是全局唯一标识符(universally unique identifier,UUID)，因此可以将一个存储库中创建的项复制到另一个存储库并保留其标识。
In fact, the item ids are universally unique identifiers (UUIDs), so that an item created in one repository can be replicated to another repository and retain its identity.
顺便说一下，初始化函数必须是文件中唯一未被声明为static 的全局标识符。
The init function, by the way, should be the only global identifier in the file that isn't declared static.
为了保证全局标识符的唯一性，全局标识符必须是URI（就是说很可能包含注册的域名以保证唯一性）。
To guarantee the uniqueness of global identifiers, they must be URIs (meaning they most likely contain a domain name that has been registered to guarantee uniqueness).
此标识符必须在此节点部署到的代理实例内具有全局唯一性。
This identifier must be globally unique within the broker instance that this node is deployed.
此标识符必须在此节点部署到的代理实例内具有全局唯一性。
This identifier must be globally unique within the broker instance that this node is deployed.
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