two-component source model 双源模型
two source statistical model 双源统计模型
two-source statistical model 双源统计模型
But if you want two or more classes to exist in the same file, then you could use a mapping model to specify the hierarchy and contents of the source files.
但是如果您想在同一篇文档中存在两个或更多的类型，您就需要使用映射模式以显示源文件的等级及内容。
Completed logical model is used for two purposes: to drive database development and as a source for a UML model.
完成的逻辑模型有两个用途：驱动数据库开发；作为一个uml模型的源。
Another possible way you could combine two mapping models is when the target of one is identical to the source of the other model.
另外一个合并两个映射模型的方法是当一个目标和另一个目标的源相同的时候。
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