過程規範語言(英語:Process Specification Language)(Process Specification Language,PSL)由美國國家標準與技術研究院(National Institute of Standards and Technology,NIST)制定[9]。PSL在互操作性應用程序的開發方面採用的是一種不同的方法。PSL的這種方法就是要開發一部為那些與生產製造活動相關的概念提供明確定義的本體,並且建立種種用於支持應用程序之間定義轉換的機制。PSL致力於創建一種用於建立過程規約的標準語言,用於明確而又詳細地說明過程或過程流及其輔助參數,並且將其作為不同生產製造過程之間的一種公共交換語言[10]。
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