在该测试中，创建了5个Machine对象，每个对象具有不同的属性集合(序号、类型和功能)。

In this test, five Machine objects are created, each one with a different set of properties (serial Numbers, types, and functions).

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集群的资产清单：固件版本、型号、序号、集群中的节点数量、处理器类型、内存。

Inventory of cluster: Firmware versions, models, serial Numbers, number of nodes in cluster, processor type, memory.

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请注意这个模式中各个组的引用方法，即反斜杠加上该组的序号。

Note how you refer to the groups as a backslash followed by the number of the group in the pattern.

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