数据操作服务(在下方的层中)从物理存储库中提取数据，并且语义服务将该数据转换为信息。
The data manipulation services (in the lower layer) extract data from the physical repositories, and semantic services turn this data into information.
编译器层中包含了一些对象模型，这些模型与编译器管道的各个阶段暴露出来的信息——包括句法和语义上的信息——相关。
The compiler layer contains the object models that correspond with information exposed at each phase of the compiler pipeline, both syntactic and semantic.
在零件的形状建模中，语义层中的形状元素、几何居中的信息及它们之间的联系同时建立。
During part modelling, the shape elements in the semantic information and the geometric information and their links are built at the same time.
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