The object group includes information layer, target layer, function layer and hardware layer while the relation group includes coordination layer and execution layer.
对象类中包括信息层、目标层、功能层和硬件层，关系类中包括协调层和执行层。
As the center of information integration of manufacturing system, CAPP takes on the important action of information integration and of function coordination.
CAPP作为制造系统信息集成的中枢，承担信息集成和功能协调的重要作用。
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