The Plan-Do-Check-Act (PDCA) methodology can be a useful tool to define, implement and control corrective actions and improvements.
PDCA方法是很有用的工具，可以用来定义、执行和控制各种纠正措施和改进。
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Peter explicitly takes his ideas from lean manufacturing and the Plan-Do-Check-Act cycle from Deming (this should be familiar to many of us in the Agile field as our primary way of learning).
很明显，Peter的想法是从精益制造和Deming(敏捷领域中应该有很多人都对此很熟悉了，它是我们的主要学习方式)中的Plan - Do - Check - Act循环衍生出来的。