拓扑编辑器中使用功能定义，来代表单元可以向其他单元提供的功能。

The capability definition is used in the topology editor to represent the functionality that units can provide to other units.

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本文首次提出代表单元尺度(REL)概念及其协同学意义。

The concept of the representative elementary length (REL) and its coordination meaning are presented for the first time.

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操作：代表单个逻辑工作单元(LUW)的事务。

Operations: Transactions that represent single logical units of work (LUWs).

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