我们将表示那些文档的注册中心对象所构成的粗粒度模型称为物理模型。
We refer to the coarse-grained model made up from registry objects that represents those documents as the physical model.
相比于面向对象语言，函数式语言在一个较粗粒度级别上实现重用，使用参数化行为提取常用的实现功能。
Functional languages achieve reuse at a coarser-grained level than object-oriented languages, extracting common machinery with parameterized behavior.
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