类装入器通常保留它们所装入类的映射，从而当再次请求某个类时，能通过名称找到该类。
Class loaders normally keep a map of the classes they've loaded, to be able to find one by name if it's requested again.
严格的讲，XMI 对从“对象管理集团 （OMG）元对象设施（MOF）”模型到大量的装入器、保存器以及模式的映射进行序列化。
Strictly speaking, XMI functions to serialize mappings from Object Management Group (OMG) Meta Object Facility (MOF) models to a variety of loaders, savers, and schemas.
使用相同的动态链接装入器在应用程序运行之后将dll映射进应用程序的内存。
The same dynamic linking loader is used to map a DLL into the application's memory after it is running.
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